See, I LOVE maple fretboards, but the EZ bridge is definitely something to think about.
Here's some advice from someone about to ditch his 2 prestiges (1550MZ and 2550MZ):
The 1550 was actually never released in japan with the EZ trem. I got this as an outlet piece and it was my first MIJ Ibanez. I'd hate to see it go, but as with the 2550MZ, it lost out to my AMAZING RG5000 (check the Japanese catalog, 1992 Spring thanks fair to see my ruby red 5000). It also brought me up to 7 Ibbies, and along with my carvin, I just can't play that many guitars. Also need to pay off a few debts so the 2 prestiges have to go.
Now, the reason I say that is because if you are happy with one of your other axes more than the ones you wanna sell, ditch em before you change your mind again.
Personally, I have 4 rare Ibanezes, 3 of which are Japan market models (RG5000, RGR580, RG685) and all of them I like playing more than my prestiges. The necks are just so much faster. I always swore I wouldn't sell my 1550, but after the 5000 came into my life, it was a quick decision.
I'd say look around, find something you think will give you happiness, get that guitar and if you like it, ditch the ones you wanna ditch. If not, keep em and enjoy playing em until you find something better