Neural DSP make some of the best sounding guitar amp sims around. Their plugins are currently 50% off. If you're into producing music (rock, metal, etc) you might be familiar with these plugins already. Throw them over the top of a guitar DI, and you've for yourself something that sounds indistinguishable from a real amplifier.
The Tim Henson plugin is great for more clean tones. The Fortin plugins are amazing for djent, metal and so on.
The best! I think Gojira and Cali are the go this year. Keen on Henson at some point as well.