It is great having my own space. Only spot in the house were WAF is almost a non-issue.
The Onkyo HTiB 5100 is an excellent starter system. When I first got it, I only had the Cable STB to hook up so it seemed almost future proof. Now, all of my HDMI and digital inputs are filled!!!
I'll probably upgrade the AV receiver to one that has a few more HDMI inputs and doesn't just have the HDMI passthrough which is inconvenient now. That's one of my only regrets about the system, the HDMI pass through - It didn't seem like a big deal when I only had one component...
I'm also pretty satisfied with the current sound quality of the existing speakers ( probably because I don't know any better yet AIIB* ) so a speaker upgrade isn't currently on the horizon.
*AIIB - Auditory Ignorance Is Bliss...my acronym/contribution to the AVS user community