AV40 is a pretty decent set, and will give you much cleaner and better music production then your current computer speakers, I was in the market for a Studio monitors, I almost got the A2 over AV40, A2 is said to create better overall sound then the AV40 that can get very bright sometime (which can cause fatigue), A2 looks great too and are so compact, it will be best of you since you said you travel a lot, You can put the whole set into your handbag without any problem.
As I said I almost got the AV40, then decided upon the A2, but in the end went for Wharfedale 9.1 bookshelves and an amp, which I feel was the best decision I took in a long long time.
It all comes down to how much you wanna spend, A5 would definitely be money well spent, they are more musical then A2 and AV40 and wont really need a sub, since it creates enough of it, but at the same time they are bigger.
BX5a/A5 > A2 > AV40.