Pros
QA definitely do deliver in what they promise and that is professional teaching to help you prepare for the real world of Software Development and IT Consultancy. They definitely do provide training on demanding technology which many companies are looking for. Many give bad reviews simply because they were expecting to be taught in something they want then were expecting QA to find them a job the day after their training finishes. Simply putting it, if you are serious about getting the 2 years experience working in Software Development then this is the place to apply, especially if you're a recent graduate!
Cons
Initial salary may be considered somewhat low, simply coz the salary does not reflect where you are staying especially if the client site is located somewhere that is not London, but everything is pretty much London prices.