Also an MSR Groundhog fan. Great hold, relatively light and tough as anything I've seen. I live in rocky/compacted Colorado soil and have never had one bend or break.
I just ordered a Superfly and picked up a handful of the new, mini MSR Groundhogs. Same shape as the originals, but a bit smaller. They look like they'll hold plenty well (they're about the same size as a lot of the V pegs out there) but are smaller and lighter than the originals.