Your looking at quite similar bags to me - i'm looking a bit lighter, more of a summer down bag - to 0 or +3 degrees to give a bit versatility.
Having looked for ages, i cant see anything better than the RAB and Cumulus range (Rab Q250 and Cumulus Q200 are the 2 i'm most interested in). I am trying to keep the weight down mind. I'll probably end up with one of these unless i see an absolute bargain - saw a RAB Summit 350 at Taunton Leisure for £90 last week but it was the no zip version which i couldnt handle (think they might have an ME Lightline in the sale for £150?)
You could look at the MH Phantom range as another possibility?
On the original post, i bought a down jacket from Gaynors 4 months ago, arrived in a couple of days no problems at all (might be stock issues?...)
Also just used Raw Outdoors.co.uk and Outside.co.uk - both of which have an excellent service (Outside do free delivery which showed up in 48 hours)