Neither is very good in my opinion - one thing is sure, neither HP
will win any awards for their domestic first class service. A lot has to do with the aircraft type and the duration of the flight: I think that HP
only serves meals on flights longer than 3 hours, otherwise its just drinks and those are out of plastic cups.....certainly not the type of service one expects in F. DL
's 757s are rather comfortable up front (certainly better than the F cabin on the domestic 763 and far better than the awful F accommodation on the 764) and meal service is generally available on flights longer than 2 hours (beware, meals and snacks are only served at designated meal times) but lately, DL
is very big on cold offerings such as cold chicken and pasta - not gourmet.
The good news is that regardless of which airline you fly with, F is always nicer than Y!