Yep, agreed. If you got the money, right now i'd say racing: X5/7.5 ---- and bashing: 7.5
Keep in mind that if your hyper21 engine is a pullstart version, it will NOT fit in an MBX-5, whereas it will be a direct fit into an MP7.5, along with any other "compact" pullstart engine - eg. that picco 26.
Reason being the X5 mounts are too low, and judging by the XR - Mugen will never make pullstart-accomodating mounts for the 5, and aftermarketers dont seem to care about making them either.
I'd say either find a non-PS engine (+staterbox) and get an X5, or stick with the 7.5 - I can attest to the fact that its a sweet car.
oh.. and as much as it makes me feel crap to see people buy my buggy for half the price - do check out ebay.
Many a time I have seen people pick up killer deals on 7.5's (and other buggies.... but 7.5's seem to be the most common), usually preloaded with quality gear too.
A friend picked up a regular 7.5 with a JP-mod SBK, XR-3, and a pair of 357/358 (kickass) servos amongst other things..... for about $470, in like-new condition.
It's not like these damn buggies wear out in a hurry anyway... mine still looks like it did a year ago... which is why ebay is a smart option.
http://listings.ebay.com/pool3/plistings/list/all/category19167/index.html
Do a search :dance:
nitroaddict - the previous Mugen buggies imo have always been second rate - to Kyosho, as well as anything that ran on a Kyosho design (Storm, Hyper7, and perhaps 9.5) as well as some other original buggies like the Crono RS01 etc.
now however, Mugen has switched to a Kyosho style design too, as well as achieving a noticeably lighter design.. I think we'll see the X5 in winning circles soon enough.