What autosurf script is the best

[admin]

What types of scripts do you use. What scripts do you think is the best when am running an traffic exchange and paid autosurf?

Demo1:
http://autosurf1.abc-surf.com/ - demo@site.com, password
http://autosurf1.abc-surf.com/control/ - admin, admin

Demo2:
http://autosurf3.abc-surf.com/ - demo@site.com, demo
http://autosurf3.abc-surf.com/control/ - admin, admin

Demo3:
http://autosurf3.abc-surf.com/ - user, password
http://autosurf3.abc-surf.com/control/ - admin, admin

Demo4:
http://autosurf4.abc-surf.com/ - user@site.com, demo
http://autosurf4.abc-surf.com/control/ - admin, admin

I listen that Neversay from Talkgold has good script and 13DP used it, but he told that it can be buggy or something like that.