if you can afford the porspec over the stock MBX5, get it, it has heaps of upgrades that you will most likely get if racing, and it's cheaper to buy them as the prospec than try to buy them separately later. ask motopro what he likes driving better, his 777 or his mugen, he runs both. i personally love my prospec, i have driven a few other buggies & nothing handles my driving style better than the mugen. you will definitely appreciate the difference coming from the hyper 7, to me it was like chalk & cheese when driving the 2. do you have a local track with people who would let you drive their buggy? if so it's a good idea to try before you buy. a lot of people (most) wouldn't like other people driving their buggy, but if you take yours down & show you're competent & are prepared to pay for damages you do you might be lucky, & it would give you an idea of what you like & don't like.