If your anywhere near the cardiff store i'm sure they would do a demo or Chester. Depends where abouts in wales you are.
The HTX22 is your best bet. Can get a wider stereo pair for better sound stage. If possible try and get a small centre off ebay (maybe a Tannoy EFX or SFX centre) should make a large difference for a tiny bit of extra space used and no need to run cables behind you.
http://www.ebay.co.uk/itm/Tannoy-EF...iFiSpeakers&hash=item35bd7ed00c#ht_634wt_1348
not the nicest looking speaker but cheap and they sound great, while staying small
I would be a little wary of this seller tho, price doesn't seem bad but they are a fairly old speaker and as far as I can remember they only came as a 5.1 pack so not sure how he has 5 BN centres :s but still not a bad price if legit. We sold our ex display one about 4 months back for £40
If you need any more info feel free to PM me.