If you decide to try toner transfer, and for those who already use it, you may find this discussion interesting:
**broken link removed**
http://dangerousprototypes.com/2012/09/29/pcb-manufacture-using-oracal-vinyl-film-laser-printer/
In brief, the video describes using vinyl for the backing, instead of paper. The question of whether it will melt on the laser fuser was not fully addressed, but several posters to that group claimed great results.
I use the photo method, make my transparencies on a laser printer, and then darken them with white board marker as described in my blog here at ETO.
John