[RunDownHouse]

I'm not sure why you keep comparing 3/6 to 10/20. The levels are nothing alike, from what I've heard. You even mention the difference, but still ask for comparisons between the two.

Also, is there a reason you've tried 3/6 a couple times and gone back to full ring? If its because of bankroll limitations, then I'd drop to 1/2 (or 2/4 on another site, maybe) and learn from there. No harm or shame in it. If its because you need x income and so have to take shots, then I'd advise taking shots at 3/6, but when it comes time for a retreat, play a couple more hours at 1/2 if you can squeeze them in.

The crux of my post is that experience is really the best teacher. You can catapult your advance by reading books, reading posts, posting hands, etc., but experience is still key. Get in there and play hands, whether that means dropping to 1/2 or playing a few more hours/month at 3/6 or 1/2 alongside your full ring play.