I'm Philly/bucks county area and I like the fish factory for all fish and corals and the hidden reef for everything else.
The fish factory charges more for fish in general but I've seen higher in places and their fish are kept VERY WELL as compared to the hidden reef.
I will never purchase fish/coral from the hidden reef. They have a great selection but it is ick central in that place and when you can see 8-9 clowns dead in one tank it says something that their systems are sub par at least IMO
If you do decide to purchase from the hidden reef I highly recommend a quarantine and a story of caution.
A buddy of my fathers bought a $160.00 fish their left and it died in the bag. Came back 15min later and the owner refused a refund and all store credit. Said he left the store it's big his problem.
I may make a special trip to Clifton, NJ if I'm near their to check out that store. Thanks for the new spot to check!