Upgrade or buy new?

[Balders]

Chaps, question for you.

I have quite a heavily upgraded ZX5, bought it about 18 months, 2 years ago and quickly modded the hell out of it with the Atomic Carbon bits, KMC conversion and I think it was the LAW34 new back end kit, shock kit update (still leaked though), TI screw set etc etc the list goes on. (I should get a pic of it really...)

Anyway, I've been away from racing for just over a year and have come back to the fold only to find that there is a new version out (very exciting!). I was thinking about chopping in the ZX for a different car but I quite like being the only lazer at my club and being as I'm an old school ZXR driver from years back I have a huge soft spot for anything ZX. (theres a nice ZXRR on ebay at the moment... )
http://cgi.ebay.co.uk/Kyosho-Lazer-Z...QQcmdZViewItem

To my question!

Is it worth updating my current car which would cost about £110 or just buying a new kit and transfering the upgraded parts over selling off what I don't need?

Cheers

Mike