!
taste and preference are a very individual thing so what seems like "the best" to some totally apolls others.
Personally, when it comes to KB feel I prefer Yamaha's weighted keys. MOtif ES8 and S90 are my favorite. But then of course they aren't just KB controllers. I'm not even sure if Yam makes any KB controllers nowadays.
But I can think of quite a few friends of mine who find this type of heavy and slow weighted action annoying and so they go for stuff that is still weighted but is still good enough to do organ solos and quick leads. I can do it on any KB since I did have classsical training but to be honest I wouldn't use a weighted KB for everything.
I hear M-Audio makes some decent 88 note weighted and semi-weighted controllers. You may want to browse their websites.
Not a big fan of Roland KBs since I find their aftertouch a bit too stiff. On standalone controllers anyway. can't say I like their weighted KBs either. Yet again, a few good friends of mine love ROland KBs.
So here you go. Not a simple answer but this isn't a simple question. This "the best" thing is something you'll most likely have to work out by yourself since you'll never really know without trying a few KBs.
Good luck and I hope you find what you need. There are lots of choices. The only way to decide is to try though.
-ED-
------------------
A gentleman is one who never hurts anyone's feelings unintentionally.
- - - Oscar Wilde