I stripped the gears in my Kitchen aid twice, but I was fond of making heavy doughs for rye bread and bagels.
We make brioche which really puts anything mechanical to the test including your arms if you like masochism and we have never had a problem, Mums old machine is now owned by my brother and that has only had one issue since 1955, it had a seal let go over the planetary mixer and it dumped black grease into her cake mix, I was about 10 at the time and still remember it, I am 69 now, she was not happy.
Like I said the downside of the KENWOOD is the noise from the gearbox, it is a shocker but they are all the same, you just get used to it.
We tried a few other mixers on the market such as Sunbeam and other well known names but when it came to even basic bread mixes they were out of their league.
I have noted that forum and will have a look later but it is interesting thatthe dough I made that prooved too quickly was about 65% hydration and was just a gooey mess that ran off the board, normal prooving/proving/proofing and it is a nice elastic dough that stretches easily and doesn't shrink back like an underhydrated dough (I have made a few of those!!).
I have no idea what happened or why it turned out that way as there was no introduction of additional liquid, I even repeated the process to see if it happened again and it did and adding more flour to the mess didn't help either, it was a wreck from the outset and beyond any recovery.
My next step is to build an outdoor table with a marble insert so I can prepare next to the oven as I believe speed is of the essence when making a pizza and launching onto the hot floor.
Ray, we have many pizza bases in the freezer section of the supermarkets and some 'fresh' (?) but with a sauce on them, I have tried many but have not liked them, the brand you mention I have not seen and most likely doesn't make it this far, no doubt there would be a market for it if someone took the time and to date I have not found a frozen pizza that comes close to acceptable, they always seem to have cheap product on them, too salty and way too much cheese.
I messed some up a few nights ago, got the oven too hot, the floor was 490C, the base cooked OK but the toppings didn't, took a long time to cool down.