To each his own... I was doing similar stuff and chose Arduino because of A) Documentation and worldwide community support B) Cost C) programming interface
At the time I was researching, the fusion brain was too much a black hole on documentation. It may be better now but I haven't looked into it in a while so somebody else can chime in on that one. The programming interface seemed too limited. I'm sure you can do tons of stuff but it was like learning a weird GUI language likened to HTML page builders back in the day. If you don't know C or VB, get a fusion brain, if you know how to program in a professional language, I would get an Arduino or Phidget.
EDIT: This is just my opinion Don't want to step on any toes.