I should go for an Lp12,....IF,...you have a good dealer not so long from were you live.Remember that if you shall have the best out of your LP12, you shall have it in for service every 12 month.
Also think about what you get/buy,in this days it is out so many pre-loved LP12's with third parts in it. Will you have that, or an original one?
I should go for an original one,have listen to so many with third parts in it,different....but not better. Often cleaner or/and clearer but less in musicality. And in the long run musicality winns,it's because of musicality you can listen hour after hour and wan't stop.
Many here in Sweden thinks an pre-circus is better than the newer ones if we talk musicality,it's importent that you listen for yourself.Contact a good dealer who can do different demos for you,and if you find a used one.....let your dealer check it before you buy it.....so you know what you are buying....and set it up with the right parts in it.
Lejonklou Hifi has very good MM-phonostage,you can also find this on the pre-loved market.....or you can find an old Linn LK1 pre, and only use the phonostage. It has both MM and MC and are still very,very good. You can also recapp it ( LK1),we have done that ....and I can say that it's much better after the recapp. I think ClassA do this.❗
Much to think about,but an LP12 is always an LP12.I see in your profile that you have had one earlier.....so you know what I'm talking about 😉.
'm sorry but you're perpetuating an urban myth - a modern LP12 does NOT have to be set up every 12 months. In normal domestic conditions it should, if it has been set up correctly in the first instance, be fine after 12 months and well beyond.