For the poker pros, multiple ISP's? How many, and which ones?

[effang]

Recently I've been playing enough hands where a disconnection, or unstable connection, and cause me a lot of frustration/tilt. For the pro's, do you have more than one ISP? And if so, how many, and which ones?

I'm thinking paying an additional x amount would be worthwhile to my sanity, and i'm wondering what is the most stable ISP available out there?