"I bought my first IBM in the mid 1990's and have never purchased anything but IBM/Lenovo products since.
The Tower model I customed ordered in Oct. 2011, has the Intel Core i7-2600 Processor with 16GB of memory, 1TB hard drive, USB 3.0, plus all the best additional features.
I use my computer mainly for business and professional use. I work with extremely high graphic designs, similar to a CAD program, which require a lot of memory and hard drive space. My machine works like a dream, fast and efficient.
We also own a small ranch, so accounting programs are a necessity. I can download bank and credit card info in a flash.
I always get the 3 year on-site warranty with priority support. They both have served me well in the past. I have only needed support help a few times since my purchase. They are very helpful and clear with instructions.