Anyone heard the new Monster Power Conditioners?

I noticed that Monster has added a few new power conditioners to their current line, the 2100, 2600, 3600, etc. I assume they will faze out the older models over time. Has anyone familiar with the 2000, 3500, 5000, etc. compared them to the newest models? I need a second power conditioner, and must choose soon, so any info would be appreciated.
Thanks in advance,
Martin Butler