FWIW, CO, like UA, only have part of their fleet refurbished with the new C product. With UA, it's the 777s which have only been partially converted (about 20% of them), while on CO the 767s have not been converted at all. Stepping into C on either airline on the older cabins is going to have a decidedly retro feel

Moreover, several of the EWR-LHR flights with CO are on a 757, with the new C seats, but somewhat cramped feel. While I suppose there isn't much material difference between flying SFO or LAX to HI or JFK, and flying NY-LHR, it's still a little odd to me to do the TATL flights on a single aisle jet.
I prefer the UA and CO seats in C to the VS seat because of the recline vs flip over issue (CO's is a newer version of the UA seat, and a better one), I prefer IFE on CO and UA to vPort (but that will improve with the new biz product on VS), food on CO is much better IMO, lounges on CO, UA or any other airline in the US are pretty much pathetic shadows of what VS offers.