Well, it started as Rebreather Association of Instructors and Divers but with the buyout of Barry by Jim in the early 2000's the open circuit side was spun up and given equal footing and the name was officially changed to RAID, it is no longer an acronym. RAID in its present form was started off in Australia by the former SSI franchise there, and their focus initially was SE Asia and Australasia, there is a much bigger presence there than the US representation would lead one to believe. DiveRAID.com would be the best bet, the connection with the pest spray is unfortunate but I doubt any of the founders had ever heard of that when they were starting up. I know I hadn't, its not a big thing outside the US...
That is very kind of you to say, I take it you still haven't met many RAID instructors
As for the OP, many have already said it's the instructor not the agency but the agency minimum standards do have a role to play. Sadly many folks will drop to the lowest denominator possible, which when combined with poor/non-existent QA of the instructors leads to some very marginal training being done.
My take on the agencies listed:
- GUE
- Small instructor pool so QA is very tight
- Courses tend to be quite pricy
- Standards do not allow for much "personalisation" of a course to fit ones needs (which is neither bad nor good, just a data point)
- Opens up some interesting dive opportunities run by GUE folks
- Path to CCR and sidemount still a bit odd from where I am standing so worth a look into if either of those are your bag
- GUE certs will be recognised as entry into most other agencies if you want to branch out later
- TDI
- Well rounded course layout and progression
- QA not as good as GUE but still fairly good.
- Materials are adequate but hardly modern
- Deep air is still a thing, but there are equivalent helium courses within the system so you dont need to go that way if you dont want to
- Lot of "big name" instructors. Overhead courses and standards are highly rated by many in the know.
- NAUI
- Tricky outside US to find instructors for certain courses
- Decent standards and a lot of room for an instructor to add requirements and tailor the course
- Outdated thinking regarding deco gas choices
- Still married to RGBM/bubble models but those can be adjusted to suit "current thinking" so I teach GF as do most of the other NAUI tech instructors I know
- Sensible depth limit for normoxic (72m with 16/xx backgas so offers some more flexibility before going the hypoxic route)
- IANTD
- Very nice course progression, especially with CCR/OC integration of various courses
- Entry to tech via "light" tech with 10 min deco and a bit of helium to 45m gives a nice entry step to someone who is dipping their toe in the tech world
- Big international presence
- QA has been .... problematic... over the last few years if you read some threads on this forum and many other sources.
- RAID
- Free learning and standards transparency is pretty revolutionary in the industry
- Neutral buoyancy emphasis in all levels leads to there being fewer "bare minimum" instructors
- Tech progression pretty complete, no hypoxic courses yet but that will change in the next few months
- Easily accessible management ( Paul Toomer is on here, as is Steve Lewis and a couple of others)
- QA is quite comprehensive, not to a GUE level but (touch wood) RAID hasn't had any "instructor killed a student and is still teaching" moments yet.
- Global market penetration is still behind so not always possible to find a shop in your specific area
Full disclosure, I am a RAID IT as well as some others you can see in my signature, though I am pretty sure I have managed to be objective.
My final advice, is to put as much or more time into choosing your instructor than you would on the course.
@Jim Lapenta has a pretty good book? blog? pamphlet? (sorry Jim I cant recall offhand now) about the process one should follow and it has been invaluable as a resource for me as an instructor (to be the kind of person someone should learn from) and many students as well.
Don't be shy to go on a fun dive with a prospective instructor (pay for their time if needed) and see how they look in the water, how you mesh with them etc once you've narrowed the field down.