Ok
Thanks for the input so far people
I can easily keep the weight below 5kg (11lbs) with a glow setup. I think that I will be heading the YS route but will now have to think about which one (Maybe I should use this as an excuse to buy one of each size - just don't tell the Wife).

This plane will be used in competition - I'm hoping it will see some FAI level (I practice flying the P07 pattern with the existing planes now but they are also used as sport fliers and have had a few repairs on them).

I'm not too worried about fuel cost - Between myself and the two teenagers, we go through over a gallon of fuel per week now just in our sport fliers (one of the benefits of having an RC strip at home). Maybe I will be able to get bulk purchasing discounts for the additional fuel usage that this plane will give. (If we like flying it I will probably end up getting three of them over the next year - one for each of us).