I was wondering why Rats is your favorite card. It's one of my favorites to play with, but I guess I was wondering if there's any reason in particular that Rats stands out to you.
I also find it interesting that of all the published cards, Rats seems to rely the most heavily on needing another specific card type (a trasher) to be in the kingdom in order for it to be worth buying. (although, this being the dominion strategy forum, I'm sure you guys will find some edge cases!) Sure, without a source of +buy Highway is basically an overpriced Peddler, but theres still some situations where one would help you, whereas without a way to trash your Rats, buying them will usually hurt your deck.
That being said, what is your favorite Rats "enabler?" Are there any trashers that you especially like to combo with Rats?