MILW,
Having owned and used the Bachmann E-Z Command prior to moving to the NCE Power Cab, I can only making judgment that is based on that experience and what I have read. To answer your questions:
1. Is the Dynamis worth it? I think it's a little pricey but the Dynamis it will definitely do more than it's earlier cousin, the E-Z Command - in particular, program and alter CVs. Having used the Power Cab now for about 4 years, I don't think I would enjoy needing to use 2 hands to operate the Dynamis. Even so, the Dynamis should be a very good system and is available in a (IR) wireless version. It was designed by ESU (the makers of Loksound decoders) and closely resembles their ECoS DCC system.
2. Can it be used with sound equipped locos? Yes - Both the Dynamis and E-Z Command can operate and run sound-equipped locomotives. The E-Z Command only controls 8 functions (F1-F8). The Dynamis should be able to control F1-F12. It may actually have access to 28, as well.
3. Has anyone besides MR used it? There's a couple of folks for sure here on the forum who have purchased a Bachmann Dynamis. I trust they will chime in with their experiences.
4. Does Bachmann still do that deal where they give you a choice of undecorated, DCC equipped diesel locomotive when you buy a Dynamis? I've only seen this with the E-Z Command but I'm not entirely sure. The locomotives offered through the E-Z Command are decent and equipped with a low-cost Lenz decoder.
Hope that helps...
Tom
https://tstage9.wixsite.com/nyc-modeling
Time...It marches on...without ever turning around to see if anyone is even keeping in step.
The "pro box" expansion is quite expensive. Taking the Dynamis and adding the Pro Box results in what ESU sells as the Navigator. Combined its 'street price' (I just checked at MB Klein) is around $430. You can get a full-blown (not a 'starter') system from NCE or Digitrax for that, either of which has WAY more expandability and capability. The Dynamis is a much better system that the EZ Command, but IMO just too expensive for what it is.
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.