OP, I think you are going to have issues getting reliable info because nobody here is smoking the specific stuff you are.
If you say you hate BHO and water hash, it could just be low quality product or bad tech causing the issues.
You say QWISO is easier on the lungs and still gives flavor, is that based on the QWISO you have had/made or based on what you've read?
There are so many variables it's hard to actually tell you with any accuracy what you will or won't like. If you tried winterized BHO you might find it the most ideal concentrate. If you tried badly purged BHO, overcooked, etc BHO then you might not like it. If you tried QWISO from someone who doesn't know what they are doing, you might hate it because it's fully of nastiness.
If you are buying stuff from a club there is some sort of consistency, if you are buying it off the street there is none. The only way to make an accurate comparison between concentrates is if you make them yourself, and make them well, or if you are totally confident that you are buying pristine examples of the type of concentrate.
In other words, there is no way to tell you what you'll like, because we have no idea what quality or type of concentrate you'll be getting. Simply saying "good quality" doesn't really help.
Best suggestion I have is try winterized BHO, it's the smoothest on the lungs I've had concentrate wise and if done right you don't loose much flavor. Personally I feel BHO is going to give the best flvaor of any concentrate, so I guess personal preference comes into play.