I started with the moom trial, but when it came time for me to make a purchase, I ended up going with BetterSnapTool. It might not be quite as flexible as Moom,

I started with the moom trial, but when it came time for me to make a purchase, I ended up going with BetterSnapTool. It might not be quite as flexible as Moom, but a) it fit my personal needs and b) it was less than half the price.