Well this is a pretty good question. I do have a question for you though...
What do you want to do in the I.T industry?
Anyway back to your question. If you definitely want to get a job in the I.T. industry I highly recommend choosing the BTEC. The BTEC allows you to focus on what you want to do with out the burden of balancing time between A-levels. I currently do A-levels and I find that my time often gets spent on a particular A-level while the A-level I need the most suffers. If you are better organised than me and there are other subjects that you are interested in I recommend choosing A-levels.