Had that MP5 myself, cracking little gun. Only issue I had was the magazine supplied - mis fed BBs at times till I took it apart and properly cleaned it. Other than that it had a respectable range and fps (close to 320) for a compact gun.
However as a new starter I would steer more towards the M4. Like a previous poster pointed out - it has a lot more parts available to customise and replace as you see fit. The only problem with any ICS gun though is that they can be tricky to replace internal parts.
For the money they're sound beginner guns. But there are other options out there. Out of curiousity, what's your budget?