This Porter Cable 14pc Forstner drill bit set looks to be a good budget buy.
Forstner Bit Sets on Sale at Rockler Starting October 3, 2015
Starting soon and lasting all-month long (at least in-store, maybe online too), Rockler’s offering a great discount on their well-regarded Forstner drill bit sets.
Hot Deal: 50% Off 10-Piece Forstner Drill Bit Set
Over at Woodcraft this 10-piece Forstner drill bit set is currently on sale for half off.