Speedqueen, in a nutshell...
Please go back and read my posts.
The SpeedQueen TC5 would be my overall first choice. I do think it will last longer with fewer repairs (probably just a belt) than the Maytag 575. I think it is possible it will last 25 years for some folks, but I believe the average family will get 15 or maybe 20 years out of it before it needs MAJOR repairs. I have said that several times. There is no other top load on the market that i think will last this long as the SQ.
I think it is still probably a question of how long the transmission, bearings/seals, and control boards will last that will determine that on either machine. Most folks cannot replace the transmission and bearings/seals themselves. Not only do they pay more for the part, but they have to pay labor for someone to install it. The consumer can replace the control board, but the cost of it to the consumer is significant when compared to the cost of the machine and the TC5 has TWO. If you read the repair boards, you will see they are not without some issues with the control boards and other parts that break. This happens with all models (and you will see a lot more in the cheaper big box store ones!). I have also said, I haven't seen enough in regard to the TC5 models to concern me...yet. This model has only been out since May 2019? It does not appear to be widespread. I also think the SQ control boards will last longer.
The parts you are talking about in the MT575, I can replace myself. The actuator is also the reason this washer is not an agitub design. I'll take that tradeoff any day all day. They aren't that much.
Getting parts later for the TC5 may be a concern. It appears to be a time-limited model. The MT575 shares its parts with other models made for commercial use. It may cost more down the road to maintain, but it does look more likely I can keep this one going if i want to. Most of you on this board have access to connections, parts for cost, have the skills to repair themselves, etc. Not everyone does.
The examples I've seen of the MT failing seem to be where it was used for commercial use. Despite its name, it's not commercial build quality. I would not recommend it for a vet's office.
However, it built better than any other top load in the big box stores (SQ is NOT sold there). I think consumers can expect to see at least ten years out of this machine; I think some may see 15. It's not the piece of junk SQ focused fans make it out to be.
I don't think the TC5 will be a family heirloom that will be passed down from generation to generation and get more than five times the life that even the manufacturer has claimed. Even the older ones were not. I think this is misleading.
Why does SQ only offer a three-year warranty? If they are THAT much better, then offer a warranty that reflects that on the TC5 model. The piece of junk everyone makes it out to be comes with a FIVE year parts and labor. Why did SQ feel the need to take on a shop owner in regard to their TR series review? No one else has, and this person is unbiased in whatever brand I've seen him review. If their product, the TR series, was that good there was no need to defend it and threaten action against one shop owner. He is just one shop owner. If his claims were bogus, people would quickly figure that out for themselves. They aren't bogus, and that's why we have the TC5 today. It cleans work uniforms, kid wear, pet stuff, outdoor clothing, etc. better. For those who want premium clean with it, use the delicate cycle. It was a poorly thought out decision on SQ by management and leadership that were reactive instead of proactive. Just because it's legal, doesn't mean it is the right decision.
I do think the MT575 is worth the extra cost when compared to the budget models that have the dual agitator sold under different names (Amana, Roper, Conservator, etc.) because of the upgraded parts and FIVE year parts and labor warranty. I do think it is the second best overall top load on the market today, but I think it's the it's number one when it comes to cleaning performance.
It may use a little more water than the SQ, but it also has a slightly bigger tub capacity.
I agree there is a gap between the SQ models and the rest of the top loads with this MT575 seeming to fall somewhere in between for the mid-level price range and their budget models with dual agitator for the low-price range. Why no manufacturer has stepped up to seize that opportunity remains a mystery to me.
Bottom line. It's a Toyota family car versus a Ford. Both will get you where you are going. In the long run, SQ will be a better value for the dollar, but that doesn't mean Ford won't be a good value for the dollar. THIS Ford.