I have mixed feelings about them! I studied there for web dev, about 4 years back. What they taught me, got me started and definitely helped! But the amount of what I got taught was definitely not sufficient! After the course I still couldn't set up a website, knew nothing about hosting, barely had any php knowledge, and just HTML and CSS basics! Stuff we did the most was do theory, like how the internet started, stuff like that, and messed around in photoshop.
After college I messed around for a while, did tutorials on the web, read some ebooks etc, and I actually learned more in 3 months than that entire college year! The internet has everything you could ever want to learn, and it's not just theory, it's actual "how to stuff"! That's the best way to learn! IMHO
Now I run my own business. Not super successful yet, but I am making a living! But, unfortunately if you want a steady job, you need a qualification!
My suggestions, find a few companies that you would like to work for, talk to them, and ask them what kind of courses you should do, and whether the CTU, CTI or a University course fulfills their type of requirements...
As a business owner though, I don't just look at qualifications. It plays a very small role! Things of more value to me are skills, experience, ability to communicate effectively and work well in a team!
I do believe there are other business owners out there with the same view. So which or who ever you choose, do make sure you follow your passion, and don't get side tracked with unrelated things in your field! If you got some mad skills versus just a qualification with moderate skills, you're bound to get some cool work!