I'm a caffeine junkie too, drinking up to a pot of black coffee and a 2 liter of diet soda a day. I used to have energy drinks (Rip It, primarily), but keeping them in stock and getting rid of the cans was annoying.
For coffee, I buy what's on sale (since I'm cheap) and enjoy Chock Full of Nuts, but do not discriminate. I was gifted a coffee of the month subscription, but nothing stood out (and I'm almost certain Sello Rojo was a part of the subscription).
I use a dual Keurig, with a timer to have a pot ready once showered and the cups for single use or a quick top off. The empty pod allows for making any coffee a single serving, but it changes the flavor a bit for me. I also keep a package of Stok on hand. It's an espresso shot in a coffee creamer package the adds a boost to coffee and makes tepid coffee taste better.