From what I've seen personally and online I'd recommend Bodhi's 88g13hp crosses, they get pretty fat and I'm sure he has a few that are crossed to straight indicas.
I haven't grown it but Tennessee kush #2 from Cannaventure is super indica and supposedly a good yielder. I bought a pack from Greenpoint seeds a couple months ago for a measly $30 in the reverse auction. I'm sure you could get it at a similar price if its in the auction.