that's all mostly opinion...
Logitech usually makes some good products, for mouse and keyboard... there was a thread on here a while back discussing wireless mice and the delays/ups and downs for each... try and search for that one...
also the case is very much based on opinion... you have to get something you'll enjoy...
things to look for in a case
1. what it's made of - all aluminum is good
2. how many fans can you put in it vs. how many it comes with...
3. what ps comes with the case if any
4. how much can you put in the case
5. how do these things add up to what you are looking for... if you aren't going to have 5 cd/dvd burners you don't need a million places to put them, but if you need 5 hard drives, then you would need a case that could hold them...
get an idea of what you're looking for... if it's standard (1-2 cd or dvd drives; 1-2 hard drives; typical motherboard and such...) most any case will do. check out
http://www.newegg.com/app/manufact.asp?catalog=7&DEPA=1 for some ideas... just to get you started... there are literally thousands of options... and hundreds of popular easy to find solutions