I can also speak on the subject of amp sims and small wattage amps and load boxes etc because I’ve tried/use all the above. They all have their place IMO but for me I came full circle because nothing really replaces an amp into a cab.
I actually have liked some small wattage amps but ultimately I just don’t see the point if you’re just trying to play quietly because, with some exceptions, they’re not usually that much more usable or better sounding at puny volumes than a bigger amp.
Years ago I bought a Kemper and sold my amps. I was in a position at home where I just couldn’t run loud amps very often and wanted to get going with some recording and songwriting. At first it seemed awesome, and maybe if I had kept some amps and profiled my own tones it could have worked better, but the appeal of the Kemper is that hey, there are all these profiles of cool and rare amps done by guys with better gear than me and everyone claims they’re great. It’ll be like having access to a recording studio with a full stable of amps and cabs, etc.
I just couldn’t ever be satisfied with anything I did with it. I spent too much time auditioning profiles. Nothing ever sounded like it would have if I had actually had the amp and cab and mics. You can make adjustments to profiles but its not like turning knobs on an amp, because it’s all been baked in to the profile.
Eventually I bought a couple NeuralDSP amp sims and thought “this is actually a little better” because at least I could turn the virtual knobs and get some kind of expected response, and it wasn’t all “baked in” like a Kemper profile. But there are a lot of weird noise issues with amp sims and I found myself spending too much time auditioning IRs and fiddling with cab sims again without being happy with the result.
So what did I end up doing? I sold the Kemper and started buying amps and cabs again. I didn’t have a good place to turn it up yet so I got a Suhr Reactive Load and for me this was better than any amp sim or the Kemper by far.
But as you might guess, I still am not happy enough with the RL to just use that. I run a real cab whenever possible. IR’s can color the tone in a weird way. If they have any processing on them (and a lot of them do) it can really screw with how you expect the amp to sound.
I like some of the ML Soundlab IR’s but they all seem to have some kind of low pass filtering built in and its real weird to have an amp like a 5150 sound dark and muffled even if you crank the treble and presence. In general, there’s just something lost in the feel and response of IR’s, but still something like the RL is the best truly quiet option IMO.
For me, the Suhr RL is a good quiet jamming/songwriting tool. But If I didn’t have the ability to crank up amps, I would be much more able to be satisfied with running real amps into it and use IR’s than with any modelers or amp sims.