I agree with Sandeep completely, thanks for the correction of Pro to Premium.
In a complete about face from some posts a week ago as far as things that are not needed (and SandyBridge is a great way to go), I would recommend going with Dell for a number of reasons.
First, I doubt you are going to want to "roll your own." Second, the person who does it for you is not going to be there at 2 am on a Sunday. Third, as just mentioned, Dell support is excellent. Bad hard drive at 3 pm. Get ready for a new one at 10 am the next morning. Plus, Dell isn't going to allow you to purchase parts that are not compatible, will likely not let you buy unbuffered RAM -- well you would need to know that -- and will tend to know what hard drives you need for the RAID controller you are purchasing.
In summary:
Completely agree with Sandeep, but I would get Dell to do it. And, a tip with Dell. Configure it online, then call Dell and go through it, then at the end ask for a discount, and they will usually give you one.
