I have just passed my A+ with Computeach. I've found them to be very professional, helpful and competent. Their students' pass rate for A+ is about 92% and their tutors are superb. I chose them after speaking to a few alternative online learning suppliers, who may offer cheaper rates but don't provide the same level of service. One company even told me I wasted my money by choosing Computeach over them - talk about sore losers and lack of professionalism!
Computeach have been in the business for over 25 years (I believe), are an accredited Microsoft, Cisco, etc partner and offer their own career counselling and placement programmes (this is for life, when you sign up with them).
Sorry if I sound like a Computeach salesman, I'm not!, but they come highly recommended from many independent sources. Good luck with your future IT career!