1) It's been discussed.
2) your set
3) your set
4) your set
5) It's been discussed.
6) It's been discussed.
7) Now that something I don't thinks thats been discussed, and I don't have an answer either.
Sorry if I didn't help much, but everything you need to know has been already discussed countless number of times. We can't tell you to buy this or that, you need to do some research and figure out what will suit your needs? What is with in your budget? What you plan on using the system for?
There are many factor that need to be taken into consideration before you purchase something, so grab your self a seat, click the SEARCH button and enjoy some quailty reading.