It is a pretty good tool that has a very small file size. Its quick, easy to use and gets the job done.
Never used it but UltraVNC is my preferred remote access for that type of situation. has a separate thing you can download where a remote user can call back to the server and connect without opening firewall ports and such.. and no bad reputation from scammers.
I read that article too and agree with everything - apart from the fact that the author of the piece is against Ammyy admin because it's "Russian" and therefore "dodgy" Not very scientific ;-)
AmmyyAdmin is good. Additionally, you may want to consider a RHUB remote support server. It is easy to use.