yes, that's a JEM 555... well actually a 2005 JEM 555, and this year is important because before thi year Ibanez put a different and worse bridge, so there was lot of problems with tremolo system as you said. I don't know if after this year Ibanez mantains the same bridge or changes it again but I hear also some bad comments about this guitar.
My personal opinion with MY guitar is that is a great guitar. I don't have problems with my bridge and I love to use my whammy bar a lot

Well, nowadays I use a 2 Tremol-YES in my bridge to help more my tuning and my whammy bar obsesion

. I'll upload some pics tomorrow, hehe, and you could see them and my scalloped neck