Hi Jacob!
While I'm not an expert on cancels, I do tend to gravitate towards US stamps with "fancy cancels" and sometimes also target cancels. I prefer them to the "sloppiness" of a lot of cancels used way back when.....unless it's a nicely-centered circular date stamp (also known as a "socked-on-the-nose".)
Putting a slight premium on target cancels, and a larger premium on fancy cancels (there are hundreds of types--some quite scarce!) might raise the price I'd be willing to spend--often but not always roughly a percentage of current catalog value.
There's an
ebay seller by the name of
mrfancycancel that I sometimes buy from. Usually inexpensive but attractive US stamps that I already own, but the cancel is cool, so into my fledgling fancy cancel collection it goes!
So ask a lot of questions, we all do (or did) and that's part of the learning process and the fun!
--Jim Wentzell
stampguyaps177-681