JAeX

Agree with @AntonS on aircraft hard product

You didn't mention your originating city but if a connection is required you may want to consider routing through a city with a VS clubhouse (e.g. JFK, SFO, LAX, etc.) as I find they're superior to Skyclubs and you would have access as long as you're in J flying to the UK on VS or DL.

I personally prefer the style and service of VS but that's highly subjective. The onboard bar is also a unique feature of VS over DL but is not something I value.