If you can attend try days or call and talk to instructors who represent MORE THAN ONE BRAND. There are differences between all of them and each has their compromises, yes, even if you spend $15k. Matching the compromises with why you want one and what you'll be doing with it is the key to all of this.
My instructor can teach 5+ different units, dives more than that and has been doing so for over 20 years.
The above was posted in another thread. Rather than hijack that thread I thought I'd start my own since this is a completely different topic.
At this point I don't agree with the statement. I've done a few try days on different rebreathers. I've probably been on over half a dozen different rebreathers. After lots of research and trying out several dives I chose KISS rebreathers. KISS rebreathers have the best safety record. They are simple. They're robust. They have been used in lots of expedition dives all over the world. And I just like the way they breathe and operate. I own 3 KISS rebreathers and currently have 5 in my possession. I'm a KISS instructor and have thought about crossing over to other rebreathers but I just don't see the point. Personally, there are things about other rebreathers I've tried that don't work for me. No big deal. That's how it is with all gear. Some works better for some and not so well for others.
So what's the advantage of being able to teach 5+ different units (I'm reading this as brands because I can teach a few different units too but they're all KISS units).