The best thing about Valspace is that it has many features which are useful for my work at NASA Ames Research Center (ARC). I can use this tool very easily because its interface is user friendly & easy to understand by new users also. There's nothing in particular i dislike so far but there may be some things if you're looking forward to something more then go ahead with them otherwise they won't affect your experience much. If you want an integrated development environment like Eclipse or Visual Studio where everything related to coding/development will come together just one platform than try out vAlSpace! At present we have used eclipse IDE only when developing our codes using C++ language however now we've shifted towards vALSPACE since last few months. This helps us save time while doing code debugging.