At least you saved some money! Twice even!
I had a problem with lag in SH4, tried the AntiLag fix, but never got it to work for me in a satisfying way.
Now some 14 days ago I got a Razer Deathadder Black Edition mouse -
that did the trick!
http://store.razerzone.com/store/raz...oryId.40946100
A simple mouse, nice size and a delight to use. Cheap too! Highly recommended.
For keyboard I've only used the black Logitech UltraX for the last couple of years.
http://www.logitech.com/en-us/639/662
Flat, no-thrills, nice key touch neither too hard or soft. Perfect and very cheap! Highly recommend too!