1- mbx 5 prospec: is made up of the less parts, very best quality and roadholding, is always bettered, very durable
2- xb 8: goes together well, complete kit, not complicated, good in the air, much tuning capabilities, always bettered, manufacturer support, no c-clips
3- 777 SP1: costly for what you get, performer in expert hands, not so appealing as other new cars, uses quickly after 1 saison, c-clips
you should just choose the one you find the most appealing to you