So, the time has come to upgrade my keyboard and mouse and I have no idea what to pick. 
I don't mind buying them separately if it means I get what I'm after.
Mouse:
I don't mind if it's corded it just has to be optical. Also I can't stand those buttons on the side that go forward and backwards on the Internet. I get into the habit of writing something then accidently hitting a button and losing what I've just written.
It also must have a scroll wheel. (Do they even come without them anymore?)
Keyboard:
I don't really mind the style of it as long as it has the big style return button like this:
I doesn't have to be cordless or anything because I don't seem to have much luck with cordless stuff*.
*Already had to take back 3 different keyboard and mouse combos because they didn't work properly.
Any recommendations welcome,
Cheers.

I don't mind buying them separately if it means I get what I'm after.
Mouse:
I don't mind if it's corded it just has to be optical. Also I can't stand those buttons on the side that go forward and backwards on the Internet. I get into the habit of writing something then accidently hitting a button and losing what I've just written.

Keyboard:
I don't really mind the style of it as long as it has the big style return button like this:

I doesn't have to be cordless or anything because I don't seem to have much luck with cordless stuff*.

*Already had to take back 3 different keyboard and mouse combos because they didn't work properly.

Any recommendations welcome,
Cheers.