General

F/P Can do comparable damage with less funding. But you know. Whatever you want.

Not biased at all.

I/Ls are blue.
I/Ls also offer more to party play with a defensive aura (status resistance), a 25 second bind and a powerful slow.
I/Ls have a longer teleport range (once you unlock the hyper for it).

F/Ps might do a bit more damage (though not by much), but lose a lot of the utility that I/Ls have. Also, you fart a lot.

i/l's have prettier skills

I/L master race

Personally I prefer I/L. It's all down to taste!