Wow no replies? Strange. Anyhow, my FAVORITE "premium" economy product was the Delta standard economy product of the 1990's lol. 34" pitch, free snacks and food etc. Ahhh the good old days!
For more current PY/Y+ I generally will fly B6 even more space cause the legroom is awesome, plus the priority security and early boarding comes thru big time in BOS on busy days.
I've also experienced VX Main cabin select. Great product but a bit on the pricy side for my liking (I upgraded Day of cause there was availablity)
By far my favorite Y+ (and I hope they put in true premium economy) is HA's Extra Comfort. For just under/about $1K RT I've flown JFK-HNL RT twice in Extra Comfort. HA provides snacks, mostly free IFE and two meals on the ~11 hour flight (blocked @ 12hrs) The forward Y+ cabin was only 3 rows when I flew, very quiet and a private feel. The best Y+ seats (Row 11 AB/HJ and 11C/G imo) on HA are now disappearing due to the installation of the new lie flat cabin. 11AB/HJ are likely still the best legroom wise but there's a bulkhead now. I'll post up some pics for you. Sorry I don't have any left of VX cause it was some time ago.
HA Extra Comfort Y+ pics from Jan 2015
A330-243's N395HA, N390HA and N379HA (which was 31 days "old" when I flew her)
JetBlue Even More Space Y+
Can't recall the reg's but one was Blues Brothers
Here's some pics of those flights:
Hope this helps you out. I believe DL gives free food and drinks in their Y+ section but I've not flown them in some time (since 1998 to be precise) My order of preference for airlines would go B6, pmVX (these are PRICEY SEATS) then HA (if Hawaii is involved lol) followed by DL and WN (as a last resort) if the routes made sense for me.
I'm a Y+/premium economy kind of guy-I want to get thru security, get on the plane early, have comfortable legroom and then get off the plane fairly quickly and since Y+ in the US consists of those benefits plus or minus I usually will grab Y+ tix or upgrade to Y+ (unless I find a ridiculously cheap price on F/J) I also figure that the more people talk about Y+ and TRUE premium economy, perhaps more airlines will roll it out (even for Domestic transcons)
Cheers and happy flying!