I've been leary of Daemon tools ever since it caused my Vista machine to continuously freeze, and it delayed XP boot time by several seconds (known issue) I use virtual clonedrive like 69218.
ive used different ones over the years... alcohol, ultraiso, poweriso, and magiciso. magiciso imo is the best overall for mounting iso's
I personally use Daemon Tools Pro Advanced along with AnyDVD HD for DVD Decryption and love it. I never had any issues with DT at all. I would use another program but I actually have a license for DT Pro Advanced so I use it lol. Alcohol 120% is also a good program in my opinion plus that ACID wizard is amazing in Alcohol 120%