Currently using BTD Halflings and a Dwarf as Free Company.
It's true that BTD and fast shipping sometimes aren't in the same sentence, if you're like most gamers/collectors, you're not likely to suffer from a lack of things to paint anyway......
Another good line are Mirliton/Grenadier Umani (Humans...), they're a hair skinnier than GW, but still fit in well, and have exactly the late medieval/early Renaissance look I'm after.
I've always liked Grenadier models and while ordering from Italy is kind of expensive, I can't help but indulge every now and again.
Imho, their Dwarves, Undead and Wood Elves are easily among the best ever made.