[wwittman]

I feel pretty good, but if I wanted to feel BETTER, should I take vitamins or exercise more?

Point is:
Without knowing what you don't like about your present monitors AND without knowing what might or might NOT be right or wrong with your acoustic environment... how can anyone know what you should do?

The 20/20bas are not crap.
I've mixed records on them (notably on John Leventhal's) and they work fine.
In fact, I would suggest they're as good as any of the others you mentioned...
but that's IF you like them.
monitors are a very personal choice.
It's all about what matches well with your tastes, your style and your habits.
I don't personally do well with Genelecs at all, others love them


Interesting to me that someone here got rid of JBL LSR28ps (one of the very few bookshelves I like and use) in favour of the Adams (which didn't sound good to me at all the one time I heard them).
See?
Personal taste.
(although why one would promote bass build-up in a room and the other not, I have to admit, I don't get... seems to me that's a ROOM issue that speakers won't solve)

If you feel your room really COULD use some acoustic help then certainly it can only help ANY speakers you put in there.

But if you don't like or get on well with your monitors then the room isn't going to be of much use.
On the monitor side, have you tried listening to the JBL's? I'd also recommend ATC which are pricey but terrific.

But bottom line is you don't say what's WRONG that you want to fix.