welcome,
Bug is one that's very very hard if not impossible to remove!
im about to get my first AEG, and believe me i have asked, researched, asked again and probably annoyed a few on here with questions....and still do
but the place is full of experienced personnel who have been in the same boat so have invaluable advice
If you can try others out first, do so, if you can get to a shop, even better, i popped to Firesupport and my ideas of what i wanted were changed once i held a few other models and makes.
If you have a set budget that can also help as it will limit your options away from the higher spec guns....
if you want to borrow my son for your shop trip you may end up buying a SAW or a Garand as your first!! haha
so does the £300 include the batteries, charger, extra mags and other bits etc or have you got a budget for that as well?