When I started shifting I got a 3 yr old Brm. somethings to look at would be current brand production, brake system, castor camber adjustability, also where shifter lever is is positioned on the frame. I now have a GP11 which I like. But for ur forst kart look at CRG, intrepid, tony kart they are reliable as far as replacement stuff. Although the U.S. has had a recent influx of made in america karts you might wanna take a look at.