Bachus, care to elaborate? I am not sure I understand what you mean by these 8 and 18 layers. Thanks!
Sqk, also for me the key feel it's important. I know what I'd like, but also know what I could live with. I know what I do not like.
Could you maybe, if you have the right experience, tell me what of these would you consider to be close to the key feel of X500...?
1. Roland E-A7
2. Roland XP 60
3. Roland E60
4. Korg Pa50
5. Korg Pa600
6. Korg Pa3x (well...)
7. Yamaha S970
8. M-Audio Keystation 61
These are the keyboards I played and sort of remember how they feel like. Some I liked, some were ok, some I hated.

Thanks!