I think i've bought every gaming mouse on this planet and a handful of keyboards.
Keyboards aren't that important. Really you're focusing on: (1) mechnical? (2) lights?
One of the best cheap mice i've ever used is the Deathadder. It's pretty much my go-to suggestion for anyone buying a mouse. The non-gaming brand analog would be the Intellimouse 2.0 or 3.0; they feel the same in your hand.
Don't get tied up in the technical stuff (I can't even use the newer stuff, I need to tone it down, because of my sensitivity and gaming style).
I've been using the Razer Imperator for a while now and I have to admit it's one of the few newer mice that I find to work really well (because it has a hybrid optical and infared sensors).
This is the combo i've been using since they came out. The keyboard satifies my mechnical = Y and lights = Y preference but like I mentioned, it doesn't matter.
I wouldn't give too much weight to the guide. It's just posting elitist qq money hivemind trends. The example would be the "God" keyboard they suggest. PC hipsters always mention the IBM keyboard as #1 even though it isn't really anything special. It works great and I prefer it to non-mechanical keyboards, but it's only #1 when you're a gaming hipster and you want to show everyone how oldschool you are.
If you really want to follow the best train of thought on selecting a mouse you need to narrow them down to: (1) sensor (infared, optical, hybrid); (2) grip (claw, palm); and then order the reamining based on comfortability in your hand.