If you like DoublePane you might like size-up better. I use that and cinch but I am considering a switch to Moom. It has even more interesting features and combines the size-up features with cinch.
Pretty good use of $10, I think, unless I suddenly need that $10 for an emergency, like beer or coffee or a raw turkey. So, thanks, even if I'm stuck without a supply of raw turkey for a week.