Comparing S19xx, Avalon 1246, and Whatsminer M30S/M31S

Hey everyone, I've been lurking here for a bit and finally decided to register. I currently have some scrypt miners and I'm ready to get my first BTC miner. I'm checking out the Bitmain S19 series, Avalon 1246, and Whatsminer M30S/M31S. Honestly, I’m struggling to justify the extra cash for the S19s. I was leaning towards the Avalon 1246, but then I heard their reliability isn’t great and they might not handle heat very well... Now I’m curious if the Whatsminers could be a solid option instead? My electricity costs are about 0.076 USD per kWh. What would you guys go for and why? Any insights from current owners of these models would be awesome. Thanks!

I gave you a merit as you placed a well thought out question in a proper format in the right section. There are 4 sellers of etc basics that are decent Avalon Bitmain Innosilicon Whatsminer/Microbt I own some of every one above. I have to see bitmain tends to be able to run in the hotter rooms best Innosilicon second best avalon third best whatsminer fourth place. My sample size is 200 pieces of gear Bitmain s7 s9 s15 s17 s19 T15 T17 L3+ yeah it is scrypt innosilicon t1 t2 t3 avalon 741 841 851 941 1046 whatsminer m3 m10 m20 m21 bitmain has been able to run in the hottest rooms. We have heat issues when summer temps go above 95F or 38c our main mining room gets really fucking hot Bitmain gear has had the best ability to run in really hot rooms. Now if you can keep the room temp controlled and keep good quality power avalon is very good. but if your mining space it rugged bitmain should be better note we only have 1 s19 so The sample is smaller 1066

Good feedback there! Happy to see that you would place the Avalon's in front of the whatsminer The 1246's seems a solid value to me if they are reliable...

So far not a fan of the Avalon 1246's. The hash rate, irrespective of pool is much lower compared to what it is supposed to do.  On my 85THs, it gets a max of 80, usually running lower.  The 83THS gets high 70's and close to 80.  1 machine keeps rebooting every 36-48 hours, and can't seem to find the issue.  Machines were new, and been mining only a few months. The S19 110's have been performing well and above the advertised rate, and been sound since day 1.

I do not own any miners, but have been running a 2mw hosting facility the last 8 months and started with the company(and mining) 18 months ago. At my site we have about 600 machines currently. And host all of the above mentioned miners. 360 s19 series, about 100 avalon(1246 and 1166 pro), some L7, goldshells, and some what's miners m21-m30s++. The facility is non climate controlled with temps ranging from 10-102f. My experience has been most positive with s19 series, main failure being psu but also bad soldering on hashboards. I very always liked avalons(started with 1046 and now to 1246 and 1166pro). They're simple to work on and once you understand the kernel log typically pretty easy to figure out any issues. The site has about 40 what's miners. There has been 1 WM fail since we began hosting. They have by far been the most reliable. They also run the hottest by far. And due to the really low failure rate, that is the miner brand I have the least experience with lol. Really small sample size(40 out of 300 compared to 360/600 s19 series). Our company started a sister site that just got fully set up a few months back. 10mw. Running exclusively WM. Depending on where you live(weather/temp based if non climate controlled) can be a main reason for going with any specific miner. Power consumption/availability is the obvious first factor. Understanding flow dynamics and keeping fresh intake cooler air coming in and not getting heat swirl from the exhaust coming back into the mine can be a huge challenge. Once you get that figured out, it makes keeping a lot of miners physically in close proximity to each other consistently mining. Long story short, even though WM are the least experience I have...I'd go with WM. Specifically because that is the least experience I have out of the above mentioned miners(they have stayed mining consistently excluding curtailment periods). More uptime means more money, less failures equals less cost. Good luck! Hope this helps. This is my first post. I'm pretty much self taught with mining, so take my advice with a huge grain of salt!  I'm the only employee at my site now, and have managed to keep 600+miners running 99% of the time, with a failure rate under 2%, for the last 8 months(similar results the previous 10 months but completely different setup/dynamic). Saying all this to give an idea of why I'm giving my input/recommendation.

Nice first post.

Personal feeling or s19pro 110T is better, mainly stable.