I completed Zenos, and honestly it was one of the best 5 months of my life.
However, this wasn't because of the course, it was the people. My class were all fantastic - I've heard from other Zenos goers that the apprentices are sometimes only in it for the money and something to do... which results in a bad atmosphere.
I was lucky enough to have a bunch of great people, a fantastic trainer who taught us a lot of life lessons and the correct mindset to employment. Remember, Zenos will not find you a job, but it CAN show you the way.
I'm currently earning £11.37 an hour for first line IT support which is great.
I'm quitting my job to go to university - some people say I'm crazy but I want to experience a different life and learn again, since I had the best time of my life with like minded people.
So basically, if you're lucky enough to get a good trainer and class then it's fantastic. I went Leicester, by the way. It will not find you a job but can help you greatly get into first level support - it probably isn't suited for anywhere else (which is why I'm doing a degree in networking) but if you're happy to start from first level support and work your way up it can be a good alternative to university.
edit: Would appreciate a reply with reasoning rather than a neg!