[mine all mine]

Do you want slow speed stable, fast stable or middle of the road stable? What distances are you looking at getting out of said disc? I use a Zone and Drone combo that works great for all my overstable needs. The ESP Zone and Drone are both very reliable, have a similar feel and cover a broad range of distances.

Vipers are great, but the best plastic is champion and those are hard to come by. Whippets are very overstable, but I feel they are really short range. They come in star plastic so that is more reliable than the DX counterpart. Champion Rocs are nice and overstable but sometimes can be pricey for the right one.