Been checking out this website Shrimpy. Its got lots of good information.
Hadn't realised how many options there are. Gas, Nitro, Electric etc etc, Ohhhh confusion!!!
I'd love to be able to afford this.
http://www.bergenrc.com/eObserver.php
Look at the expense though...Phew.
The electrics would appear to have the most going for them regarding reliability and simplicity although its a bit like swings and round abouts.