I guess what I meant by "classes of service" is the 4 distinct cabins / seats, not so much the F&B and service component of the cabins. This is a brand new 330 neo with the new Delta One closed suites up front, followed by the 'premium' seats (full recline with foot rests), then the C+ seats (labeled as such), then the main economy seats. For me personally it's all about being able to recline (premium select) or lie flat (Delta One closed suite). The food / beverage / service is secondary to me. Right now all four of us are now seated in premium select seats (I paid to upgrade two of my companions).
IMO the premium select seats are much more comfortable than the 'normal' C+ or main economy seats, so that's really all I was trying to figure out (if this plane had the 'premium select' seats, which it does). Now, if 2 of us end up getting upgraded to a suite up front, even better!