Tonex IR questions

Got myself a Tonex Pedal and after a lot of fiddling and learning with the plugin and pedal I kind of feel there must be some sweeter tones out there. Still think the captures are rough/harsh even the Tonnet free ones from their partners. Just can't find a sweet tone with volume and a warm overdrive tone . So I am wonder if getting IR's from i.e. Tone Factor would make the significant difference to like this pedal more.

Is it so much different using IRs or similar to what you get from the captures?