Hi Sue!

I, too, am in Northern NJ. There are a lot of factors, but my AG pool is built into my deck and I use wedding cake stairs to get into it. Here, in NJ, the tax bite on your assessment for IG can be substantial, and the resale value is dubious. A pool is only a plus if the buyers want one. Otherwise it's a problem they want to be rid of.

I cannot really recommend a dealer/installer. My one experience with the warranty replacement of my liner was not great.

Another factor of AG pools is that they generally tend to be used more by owners....because if they are not using it, they take it down. Harder with an IG.

Of course, with bad joints (I'm now "bionic" myself ) swimming is really low stress, so you'll want length, more than width, probably. Perhaps a long, skinny lap pool is for you. Again, mine was a custom build. It came as 16x32 or 20x40 but they were able to build it as a 16x40, which has worked GREAT for 11 seasons. I'm now working on repairing some damage from our miserable winter that converted the snow into ice on the winter cover.

FYI, my pool is a FantaSea...technically an AG, but not much different than an IG as it is rectangular and has a deep end...and is built into the deck. Looks like the old redwood pools. Oh, and the FantaSeas are solar heated.