1st off,Hi P

Alan,
There are many many speaker brands,and everyone has their own favorites.All three of the brands you mentioned have their followers.While Alan P and I both like Magnepans,they arent for everyone.
Do you like forward sounding speakers ? do you like a more mellow sounding speaker? Your best bet is to audition speakers and find the type of speakers you like.Once you've figured that out,do some research here and other places on the web to find speakers that suit your listening tastes.
Relax and enjoy the speaker shopping.Its a lot of fun and not to be rushed through.