If you want presets go to customtone, many users upload theirs. But, if you really want them to sound good, you'll need to tweak them depending on many factors ( guitar, pickups, DI level, hands, strings, tuning, etc) so you'll work twice.
Start with the treadplate as said above, use the screamer or the boost+eq emulation and tweak. Before impulses, many people used internal cabs with good results, experiment with those first.