Just built a system with parts ordered from Newegg
for less than a grand out the door (no monitor as I already had a display).
My opinion on SSD drives are different than everyone elses apparently. Yes, they speed up boot times, but more importantly they speed the load times of intensive applications (PS, Premiere, After Effects, etc.). It's probably my favorite part of the system I just built.
Ivy Bridge vs. Sandy Bridge? Why NOT go with the new tech if you have the budget? They run cooler (especially if you plan on overclocking), but just make sure you get a newer MOBO with 22nm support. Lastly, don't forget a GPU as a lot of additional processing power can be shoved off onto them.
System I just built:
MSI Mobo w/ usb3 and the 77 chipset
256 Samsung SSD
1 TB 7200 drive (additional storage in addition to my external drives)
AMD 7770 GPU w 1GB DDR5
case, dvdrw, memcard reader, etc...
If you have the experience in building one, get what you want and make it your own!