I have climbed using many different harnesses but my personal favorite is the Black Diamond Aspect. Its very light, comfortable, and streamlined with plenty of room. I think that people get caught up in bells and whistles along with marketing hype so don't over think it. You should try on every harness possible and see what works for you.
I have spent more time hanging in minimalist harnesses (BD couloir/Bod) than I would like to admit and felt just fine.
Comfortability and function is key, but remember...if you are not suffering at some point during your journey, your personal growth and accomplishment is probably just as flat as the valley below.