I have 2 ATG guns. One is for photos and the other is general purpose (got one in clearance section for $9 didn't have tape in it). I use the ATG for most things, photos, ribbon, paper,etc.
I also use Scotch Quick Dry for chipboard, buttons(sometimes), bling,googly eyes, etc. Sometimes I use gluedots for buttons. I have a xyron X that I will use for little pieces, border strips. I also use the zig 2 way for small, intricate pieces. I have an arsenal of adhesives at my finger tips because I could never decide what I liked or should use for what. As I have become more experienced with workind with different materials I have stopped purchasing some adhesives like smaller tape runners and double sided tape, tacky glue. Unfortunately I did stock up on all these items and will have them for quite a while...

Learn from my mistakes and buy an ATG. you won't regret it!