I suspect the XX has some resale value too.
If its an early ZX-5, I'd suspect the XXX is actually the more competitive in its class. After all the XXX series has only just been replaced by the 22 and it still forms the basis of many Losi models.
A cheap, simple brushless solution would be an Ezrun system, which you can get off Ebay. They can be UK sourced, but expect to pay a lot more for it. Either the 9t or the 8.5t for the Losi (9t is cheaper and better for a beginner, but more limited overall) and the 8.5t or 5.5t for the Lazer.
However its worth noting that the real performance boost in the last few years has been in the form of Lipo batteries. Switching to these will make even older brushed systems fly like never before.
As for racing - we normally run 2wd and 4wd separately, but this depends on numbers. If we don't have that many racers we just run them all together. Clearly this means that running a 4wd does offer advantages when we run together, which is why Bury has an unusually high number of 4wd racers.
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Yz4 - Yz2
DEX210 - Cobra 4210- DEX410
RC10 Team - Manta Ray - RC10T
Mini Trophy - Blizzard - Wheely King
Tz4 - GT24B
BMRCC
Emergency back-up race controller
(but only if nobody better is available)
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