WASD boards aren't that bad. There keycaps, however are not the greatest. If you have plans to replace the caps, I would only look into their barebone options. With that said, I would buy a Filco MJ2. They are built like a tank, and I regret getting rid of mine. They do come with ABS caps though. The nice thing about buying a Filco, is that if you decide to sell it down the road, you will have the stock keycaps to put back on it, and sell with the board. You will have a tougher time doing that with the WASD, unless you sell your custom keyset with it.
Good luck with your search.