Thanks all for your input
MTM are out of the question at the moment. I've just got divorced so getting somewhere to live is higher priority, lol!! I'll bear it in mind for the future tho!
I've looked at loads of stuff on ebay now and quite a few listing reckon that they're selling unisex stuff, so might see if I can try my mate's RSTs on to get an idea of size as he's not much bigger than me.