Been commuting for last couple of weeks on GEML on a regular basis after many years away and it's been interesting to see how things are going compared to almost ten years ago when I used to do it regularly!
Was on the new one myself, must say it's a good improvement over the unrefurbished ones and much more modern inside than they were and the Wifi and power sockets they added are going to be very useful, I never had a big issue with the 321s in general, but they were looking very tired in some respects before the refurbed units, as great a job as FGE did with them, they really do need the next refurbishment now.
However I still prefer a 360 in general, a solid built train if ever there was one, unbelievable to think they are 15 years old. I remember when they were new, still exceptionally quiet and rattle free and everything working well, sure the carpets faded a bit, and they had seat covers replaced, but I'll miss the flying saucer sound and them when they are gone. Guess they will get Wifi and sockets and be refurbished when they leave.