Dexterity wise using Showa or Atlas gloves will be the same using either system. The KUBI (UTD) gloves that come with the set are very thin with consequently good dexterity but they are thin, I swapped them out for Showas as I couldn't imagine them holding up too well. The Sitech rings are big enough to drive a car through. I have small hands and wrists and like that the Kubis come in a small diameter 80mm ring. I've not used the Sitechs so can't really comment but have had the Kubis for a few months and like them a lot and most importantly no leaks. True they are expensive but they seem very well constructed and, after using a few times, go on and off very easily with one hand. Yes, I'd recommend them.
---------- Post added May 9th, 2014 at 06:55 PM ----------
Your suit will need latex seals in order to use.