Homebrew PCBs

I was wondering if people use the toner transfer method with the clear 
laser print transparency sheets??  I like the ability to see through 
the film for ligning up dual layer boards with a few key drill holes 
for alignment.  Simply line up the holes with the pads on the clear 
sheet and iron on.  I have tried it with copier transparency sheets 
and got okay results but never tried the laser printer sheets.  My 
guess is they can take much higher heat than the ones for copiers.  I 
wondered if one sheet could be cleaned with Acetone and reused a few 
times??

Anyone have any thoughts or comments?