Hard to say
Having read your thread in the Beginners Corner, you need to slow down for a few minutes and think about some things. First and most importantly, what type of riding do you intend to do? Will you be riding cross country/singletrack? Do you want to do urban riding? Dirt Jumping? Freeride or downhill? 30 minutes ago you were looking for a decent deal on a $600 hardtail, now it's a $1000 full suspension rig. I'm by no means criticizing, just trying to head you off from making the wrong decision.
First, determine what you want to do in terms of riding styles. If you don't know, do some research on cross-country, urban, downhill and other types of riding. See which one appeals to you most. Then you can start narrowing down your bike choices to hardtail, full suspension, etc. In general, you can buy a really nice hardtail for less than $1000. There are some deals to be had on full suspension rigs if you shop around. before you do though, continue to educate yourself. Read more on this site, ask questions, and begin to understand the differences in the components offered by different manufacturers, and you'll find that your decision in the end will be a better one.
If you want an absoulte answer to your question on the $1000 full suspension bike, there are some deals to be had out there, especially if you can find one of last year's leftovers. Other than that, I think that if you spend $1000, you'll find yourself wanting to upgrade components once you find the limitations of the bike. I would guess that your options in the $1200-$1500 range would probably eliminate much of the needs for upgrades down the line.
Just my thoughts.
Clyde