I can't speak for the wireless sub kit since I've never used it, but I have used the Rocketfish wireless rear speaker kit (RF-WHTIB) for my surrounds on and off for the last couple of years and it's pretty great. Once in a great while the sender and receiver lose sync (mostly just when my power goes out) and I have to give the power button on the receiver a quick push. Sounds fine, although it is RF so it can be susceptible to interference, ymmv.
ht Panasonic 60" ZT60, Monitor Audio: Silver RX6, RX Centre, Radius 90HD; Martinlogan Dynamo 700, Marantz SR5006, PS3, Oppo BDP-103D
2ch Sony KDL-32W650A, Sony BDP-S1000ES, Marantz PM8004, JVC T-X3 tuner, Monitor Audio Silver RX1, REL T3, Apple TV, Peachtree Audio DAC•iT, Sennheiser HD598
lr Panasonic 50" ST60, Sony BDP-S5100, Apple TV
pc Energy CB-5, Audioengine D1, FiiO A1