The courses will vary with the instruction and how much effort you put into them, just like most university courses do. I don't think you will go wrong if you

The courses will vary with the instruction and how much effort you put into them, just like most university courses do. I don't think you will go wrong if you want to learn more, even a so-so course will bring up topics you may not have thought about and you can challenge yourself. I obviously like the best courses I can find, but I have sometimes learned the most from courses that were not rated as high by others. Given the costs are relatively modest for most of these style courses, I think you'd do well to try any of them that fit your area of interest and have decent reviews. Also if you are interested in security there are conferences dedicated to it nearly year round, and they generally offer pre/post conference training and specialized information. That is obviously the more expensive option usually, but my guess is given you are already experienced you'll get a lot out of these sessions. I'd say university is really not worthwhile, unless you just want/need to add a degree to your title.