I am getting ready to order an IG kit from them. They use Hydra Pools kits as does Royal Swimming Pools.com I called Royal and they told me after 2 days that they can't even come close to matching poolwarehouse's deal that I faxed to them. I have read mixed reviews on Royal, terrible reviews on National, but I can't find anything about Poolwarehouse. They are several thousand cheaper than anyone on the kit we are interested in. Thanks in advance for any help.