Thank you both for the quick replies. The reason I am reluctant to spend so much initially is because I tend to phase in-and-out of hobbies very quickly. I don't fancy finding myself £250 out of pocket for a hobby which I may fall out of love for in only six months. That's why I said my absolute upper limit was £100 ($200). It's therefore something of a concern to learn about the unreliability of these models - especially as my RS4 has lasted a good few years with minimal upgrades and replacements!

It may very well be that, six-twelve months down the line, I decide I'm interested enough to upgrade or to purchase an additional tank but for the time being, I'd just like a simple, RTR unit for sub-£100. Any recommendations with that specification?