Except for the 1 pearl white VX the only thing that makes one VX prized over another is personal preference. The 99's had 16 inch rims while the 00 & 01s had 18's. There was some talk of the 99s being more prone to engine failure but I do not think anything was ever conclusive. So while the Proton VX's are by far the best looking just find a good one based on what you like.