If you are new to it mate, dont worry about a full set as you'll only use a couple of the backs in play. All you need is a 688, 690 and a 692 in the majority of cases. Others may go up to a 694 for fatty cheap training paint.
UL's are nice, though expensive but it's all Ive ever used.
Take it or leave it, but it might save you some dosh.