997 Tiptronik vs. BMW converter

Greetings! I was able to buy a 911 I (4S) this year with a possibility (alternatively R8 r-tronic but that’s another topic). Could already recently make a test ride with the Cayman and the 4S, where both switches were. Have fun, but I am in the city and the constant dome is already quite annoying. The tiptronics is usually called very bad, slow, opatronics etc. – is really so bad (can unfortunately not make a test ride yet). Do you currently drive a 335d with a converter and am not actually dissatisfied – can you somehow compare the tiptr. of 911 & a converter from BMW or does someone have a direct comparison?? Would I be interested in just that. Wouldn’t like to trigger a fundamental discussion here (read this in some other articles) about automatics and switches – but look forward to a few answers. Lg Sigi