#1
They are in the same price range.. but i dont know wich one is better.. can you tell me, or give me other suggestions
#2
Both are good. The Eleven Rack's support seems to have dried up, though....

Buy used.

Even better, buy a used HD500. Less I/O than the Pro but uses the same exact software.
#4
As someone who owned an Eleven Rack and now has a POD HD, I think the POD has superior metal tones, but I preferred the clean models on the Eleven a bit over the POD. The POD has far more sounds though, and they both do mid gain and crunch tones about the same, so really it's a bit of a toss up.

I went with the POD because you don't need Pro Tools to edit the sound on your computer like you do for the Eleven, which means I can buy used and still have full functionality. A lot of the time you can find the Eleven Rack used with Pro Tools, but even so the POD is a lot less hassle.
#5
I second the POD HD500x idea.

Unless you need to record mic's with it.
If that's the case, then POD HD Pro be it.

Not knowing anything, I'd definitely choose a pod over an 11R.
One I tried didn't convince me at all.
#6
The 11R is a more or less dead product walking.

The Pod Pro X is the better choice.

If you don't absolutely need rackability or some of the I/O features of the Pro X (and if you're not going to be plugging a Variax guitar into it), the Pod HD (bean) is smaller, cheaper, more portable and possibly makes more sense. The software is the same.
#7
Having used both, I'd say that the 11R has slightly more realistic sounding amps and effects, but the Pod has FAR more options, especially in terms of routing.