You really don't need it and unless you plan on doing something other than "personal use" an i5/8gb/SSD will be good for years to come. Just keep it clean and do routine cleanings and it should be fine.
If you can afford it sure go for it as it's a nice computer but if I was going to spend that much I would want a larger SSD. Especially if you're running HEM/PT4.
The one you listed gets reviews and seems to have issues with the audio drivers.
http://www.tigerdirect.com/applicati...123&CatId=4935
This one is same price and is basically the same but it has 256gb SSD.
How old is your current laptop?