Just thought I'd post up my impressions after upgrading my Rel S5 to a Rel 212se.
When I bought my S5 I was replacing the Focal SW700 that I'd had for years. I figured it was worth spending a bit extra and getting a sub that would work well even when I upgrade my speakers etc. I got the S5 and was pretty stoked with it, to say the least. One of my mates at the time had an SVS 13 ultra and he was equally as impressed with my S5. I was living in a rental with some friends at the time, and figured I'd get a second S5 when I bought my own house...because why not?!
Unfortunately, the house I ended up buying didn't have a dedicated theatre room...or at least not one big enough for my setup, so my theatre gear ended up in the main living area. I've ended up having to do a fair bit of electrical and wiring work to get this room neat and to a point I'm happy with, but unfortunately there isn't enough room to put two S5's in ideal locations. Given the size and openness of the room, the S5 did get a little lost too, and didn't have the same impact as it did in my previous room.
After this I stumbled upon the 212se and was intrigued, as it seemed like it would be a descent single location sub that could pack a bit more punch than the S5 in my room. Well, it got delivered last weekend...and by god, does it pack a punch! The bass impact and feel of this thing surprised me massively, especially considering the size and openness of the room. The feeling reminded me of big car stereos I had in years gone by...it's seriously impressive! It's also still very tight and accurate and has completely lifted the rest of my system up a notch.
Managed to pick up a Longbow wireless unit with the sub and am very impressed with that too, as it allows me to have a really neat and tidy setup and get my sub in the right spot, without losing any sound quality.
Still need to finish running it in, but I'm extremely happy so far