If you like inwall speakers, look at Triad. But also check with the speaker forum here. Lots of inwall info there.
Pioneer is OKAY for receivers, but you can also look at Marantz, Onkyo, Yamaha, and Harmon Kardon. Even Sony has its fans. But with a receiver, just get the cheapest one with the features you want. No need to blow money on a receiver that has tons of bells and whistles that you won't use, and the sound quality only rises incrementally at each pricepoint, if at all.
Subs, depends on how you allocate your budget, but there are lots of nice choices from SVS, HSU, Elemental Designs, Epik, Outlaw. They're internet direct dealers that give you way more bang for the buck than the "name brands" from speaker companies, although there are nice subs there, too.
Don't believe everything on the Interwebz! A duck's quack DOES echo!