What is the Most Versatile Rotary Power Tool?

[winlinmac]

I currently own the following Rotary / Rotary-like Power Tools,
Bosch Colt (Fixed-base and Plunge) // No Router Table
Dremel 4000
HF's Multi-Oscillating Tool

I see a Rotozip and DW660 more practical for cutting Drywall, but not for making precise cuts when woodworking.

What do you all think? Is it better to just own them all?

 

[Strouty]

Buy them all and post pictures.

 

[davethorik]

I prefer the pink hf "pencil grinders"if pneumatic were an option. One out of about every 10 is bad out of the box, but they last forever if they dont have excessive runout and you use decent bits.