I'm really happy with my Warbonnet Edge tarp in Spinn, it's just the right size to give full coverage (though no extra space), it's very lightweight and small to pack. If you have the budget for a Warbonnet tarp then I'd say go for it, even if you have to wait longer to get it. That way you can buy the tarp once and you won't feel the need to replace your tarp with a "good one" later
If you're on a budget and can trade off some weight & bulk for price, there's a few options that come to mind:
Hennessey Hex (as already recommended) - $59.95
Mosquito Hammock Diamond Fly - $50
If you're ok with a square 10x10 or 8x10 the Etowah tarp can be had for $45-50
Etowah 10x10 - $49.50
It's hard to beat the Hennessey Hex for price if you don't mind it being a little heavier. It's a good shape for hammocks, provides plenty of coverage and at $60 it's priced well below the lighter hex tarps out there.