I have an old Allegro Track bike and still running the original stock wheels (Alexrims R450 double-walled rim laced to flip flop hub, running on a nice White Industries ENO 16t freewheel). Use this as my daily commuter, but the rear wheel is definitely in need of replacement. Unless there is a really good deal on an entire wheelset in the January sales, I am just looking to replace the rear wheel. Was looking for some recommendations on some rear wheels. Would like to upgrade. Budget would be under $300.