When I see something I like from GOTD (which is less and less, to be honest)...I fire up my VM, install it there, register it, "virtualize" it (also known as making it portable)and run the portable on my normal system. If that works, fine. But if it doesn't, I lost maybe 30 minutes...however, if I really like/need it, then I will install & register it again on my normal system.
Bits Du Jour is usually the site with the better offers, although GOTD positively surprised me on occasion. That is the reason I still go there.