SL 55, 63 or 65?

Hello together! I always found the SL great, especially the high-capacity variants with/from 5l… Now I actually play with the idea to get one in the relatively near future… The question is how the models differ from each other in subjective driving feeling, driving performance, reliability, sound etc.? Just with the friendly around the corner driving both rehearsals is unfortunately not particularly interesting to me, with what I expect from the “maintenance effort” / susceptibility The 65 was only available in one generation, so you can only compare it with the others in general. But if all AMG variants are very vulnerable, I could possibly also be happy with the idea of the “small” 500 (there is obviously the variant with 306 hp most reliable, or?), although about 40 or 50 % less engine power is of course already an announcement. .. Is there a purchase advice thread or forum with this topic somewhere?