bigger the better,the best to learn on is a raptor 50,but that nitro,not quite as quick as 450 but still able to do 3d,so a bit more forgiving for leaners,so the 450 will be your best bet[if your stuck on electric},just tame it down if has a balance bar,and move the weights out as you get better,the 130 brillant,but has excellent electronics for inverted,but beening small can be tricky for the begineer.but well worth the money