Gaming headset, keyboard and mouse

So with Christmas coming up, I think I am gonna get a headset, keyboard and mouse. I built my own pc about a year ago and it's a monster and I got bose surround sound with a Dell U2412M IPS monitor but I'm still using my keyboard from about 10 years ago and a crap wired mouse. Also bought a crap 15$ headset 3-6 months back and it's just awful. So I need some suggestions here.

I have been looking at headsets for a bit but I need someone with experience to help me out. I just want something with excellent sound and excellent speech quality. I don't really care about all the bells and whistles, they are nice, but I just need excellent sound quality. I would greatly prefer a wireless headset but not if it's gonna give me white noise from the radio waves. They seem pretty retardedly expensive too, like 300 dollars for a high end one, that just seems ridiculous to me. I was hoping to get a very good quality one for 100-150$.

I was thinking about getting the R.A.T. 7 Gaming mouse. http://www.newegg.com/Product/Product.aspx?Item=N82E168...
It just looks like a superior mouse with the "snipe" button, excellent customizability including weight, size, etc. Would this be a good mouse to get? Or the r.a.t. 9 one (same but wireless). I'd rather have wireless but not if it will sacrifice performance. Will wired be higher performance than wireless?

As for keyboards, I don't know. I guess mine is fine but what would you suggest? I hear mechanical is nice, is it worth it?

I would LOVE to find a christmas deal with all three of these items, say a nice headset, keyboard and mouse for 300$ or so but I havne't seen anything like that on Newegg yet. If you got something please share it. Thanks.