FXO vs RB4 vs LX6

[Blade3562]

Ok so in my random times driving, I can't decide which of these cars take the cake. Seems like the RB4 doesn't get stuck, but the FXO can handle. All while the LX6 can accelerate like a bat out of Hell. So my question to you gentlemen is which one should I buy on the server. Arguements for or against will all be considered(the LX4 is also an option). Is there an advantage server to server? I see Montana in chases tends to have short cuts and I always spin out in the XRT lol