Dave,
I am not sure a Pass would move quicker. Pass Labs is well known. But I have sold 3 First Watt amps. None has taken longer than 2 days to sell. They have quite the devoted following, despite their low power and niche applications.
Anyway, not to get sidetracked. I would say buy whatever you think will match best with your speakers (Mark at Reno HiFi could help with that and has a return policy, if there are no dealers in your area). No need to buy with resale value in mind. Both Pass and First Watt amps have active markets for them.