TB already answered the 7750 question.
I've had my AceTimer boxes for about 3 years - still quiet and running strong.
As for the watch lasting longer - it's debatable. The RSC tells me it's best to not keep it wound up and running all the time, but that it should be wound at least once a month so that it runs at least 3 or 4 hours a month. Like anything else mechanical, increased use means increased wear over time. Also, like anything else mechanical, if you let it sit idle for too long it will seize up.
As for grabbing the watch and going without needing to set the time -- yeah... good luck with that! Even my gen Rolexs and Oris and Omega and vintage Cornavin etc will require periodic time adjustments, as will all mechanical watches. If I don't wear a watch for a month or two (most of mine are only worn 2-5 times per year) they will require time adjustments (and often date adjustments) every time I wear them.
If you want a watch you can grab after 2 months and not have to re-set, go quartz.
I would like one with space for 10-12 watches, if anyone has purchased one or can help me, it would be greatly appreciated! Also less that 500 would be preferred lo l
