I am torn between letting people know about this place, and keeping it a secret so when I want to go again I won't have to wait.
PrimeBurger opened recently where Deli-on-Rye (previously Daphil) was in the Waldbaum's shopping center on Willis Avenue in Albertson. Always in search of a great burger, we had to try it. The burger was great. We spoke to the chef, who told us about the mix of meat they use to get the great quality burger they make. Not sure where the buns are from, but they are very similar to the ones made at the bakery in North Shore Farms on Jericho Tpke.
The onion rings are great as well, although I would say that the fries were not great, but a small price to pay for such a great burger. Also, their fountain soda is refillable, and they have a great variety.
No reservations, so you may have to be prepared to wait.