craigb
Just be careful about those SSD's! They don't "start to fail," they just die. So consider getting two and RAID'ing them (you only need them for the OS drive anyway and that can be small - keep your data on a much larger separate disk).
Actually, one of the better setups now-a-days, is to have two smaller SSD's in a RAID-1 configuration along with two 4 TB's also in a RAID-1 configuration (try to use the exact same drive for each set if possible). Backups are always a good idea, but not losing any data in the first place is even better! 
Well taking your advice I purchased a second SSD driveand installed it, thats when the fun began.
I tried following some directions I googled to set them up with th e Intel Software and could never get it going.
I then invoked the BIOS Ctrl I Config setup to create the array, and good thing I backed up first cause it wiped the disk out
Short story long, created the raid array, restored mt disk, now all is well.
SO now I have a DELL XPS 8700 with and
I7 Quad Core 4790 3.6 Gig
24 Gig Memory
NVidia GT740 video
2x 256 SSD drives in Raid 1
1 ITb Projects SATA Drive
1 1.5 Tb Library SATA Drive
Focusrite Liquid Saphfire 56
Focusrite Saffire Pro 24 DSP
Tascam FW 1082 Control Surface
and tons of rack processors