I use TH3 a lot and like it. Setting the sound through speakers instead of headphones helps. I tend to build up the sound from scratch each time. I do like tempo sync'ed effects.

almost all of my guitar recordings are done direct,
with a palmer PDI-09 capturing a line level off the speaker output of a Mesa Boogie Mark 2b 60 watt head.
 
the signal is split from the palmer, and sent to a weber Mass Lite attenuator, and from there to my array of different cabinets for monitoring; with the attenuator AFTER the palmer, i can monitor at any sound pressure level i want, but the direct signal hears the amp wide open.
 
the line level goes straight into my interface, into sound card, straight to mixer.
 
i also mic up my cabinets sometimes, and blend the miced sound with the direct sound.
 
to my ears, this is superior to sims.
 

I have Recabinet and use the speaker cabs with my amp running direct in. I can get my sound perfectly without mics. It blows me away how good it sounds.
I've also used the Torpedo Wall Of Sound and the cabs available in Amplitube. They all sound good, but the recabinet IR's are the best to my ears.