The majority of controller manufacturers use Fatar keybeds, so finding what you are looking for is really more about comparing price points based on the keybed. I have an SL88 Grand, (which I love) and it uses the TP40 wood keybed. It is the heaviest and most expensive of the Fatar line. I don't think you can find any new controller for less than what you would pay for an SL 88 Grand.
I think the most common 88 key Fatar keybed is the TP100, which is what is in the SL 88 studio (which is half the price). and also in Native Instruments and Arturia's 88 key controllers. It's obviously a lighter feel, and nice, but definitely not IMO on the same level as the SL 88 Grand.
One option you might consider if you are set on the wood keybed, but don't want to pay the new price is looking for an older Studio Logic model that used the wood keybed. Prior to getting the SL Grand, I had a Numa Nero controller that used an older version of the TP40. You can pick those up on eBay for $400-$500. I don't think they are really supported anymore in terms of software, but they are quite simple and mine worked fine for a couple of years.
