The only thing you are really missing going with HP versus Ultimate is drive encryption and a built-in drive imaging program. Most people don't use encryption, and I have no idea how well the backup program works. Personally I would much rather buy a third party backup program than pay the extra for any windows built-in proprietary crap.
SSD's are great if you can afford them and don't need much storage space. But with game installs running anywhere from 4-10GB each, and increasing with every new game it seems, an SSD just doesn't cut it. Go for a Raptor, or if you can afford it get several SSD's.
8 Pro 64bit
AMD FX 8350
Asus Sabertooth 990FX R2.0
24GB GSkill/Corsair 1866MHz
2x XFX 6870 1GB
SSD - OCZ V4 128GB/Kingston 120GB
HDD - 3TB/2x 750GB/500GB/250GB
Cooler Master HAF 932 Red
CM Hyper 212 EVO w/2x SickleFlow 120mm Red
Logitech X540 5.1 Surround
2X Acer 23" LED - Eyefinity: 3840x1080
Microsoft Sidewinder x4 KB
"The significant problems we face cannot be solved at the same level of thinking we were at when we created them."
- Albert Einstein