GameStudio can handle decent polygon counts , and reg resolution textures , meaning u can make a pretty nice game with it , but dont expect to make the next unreal tournament with it. Most of the low res art u see and low poly models are just because thats how the people make them , lately much better art has been created for gamestudio than the one from the past years , and in fact , a lot of times u'll see something that looks like a low res texture being used and it's actually a very low quality 512x512 texture being used , so dont let that fool you , the better the art you make for it the better the game will look , it's simple. If in doubt , just get some textures from unreal tournament 2004 or something and put them on some geometry in gamestudio and run it , u'll see they look pretty good. If you wanna learn to design 3d games , then i'd say GameStudio is the right choice , it;s simple enough for a novice , and powerfull enough for a developer , so i highly doubt u'll be dissapointed.