My first bike was a suzuki 600 Katana,plenty of speed,a little top heavy,comfortable enough to ride all day. Good starter bike, as long as you respect it.
Second bike was CBR 600f2, faster, handled great. The problem is the slightest drop(fall over) could cost serious change. Myself and 3 buddies all had them and we could tell you there is about $2000 worth of plastic if you replace with factory colors

They are fun though..now I want 900rr

Good luck and enjoy
Rod