As opposed to the old-fashioned process of buy amp -> fiddle with sound -> get frustrated at gigs -> sell amp to fund purchase of a new one which you're sure will sound better, I see a few companies now have a line in preamp and/or amp simulator pedals. Certainly, I remember being impressed by the sounds that a friend achieved years ago by turning up with just a Boss FDR-1 and plugging that into the PA, but I see the various models from Donner, Joyo, etc are at a price point where I could take a punt on one or two and not feel like it was too much wasted investment if they were a disappointment.
So: who else has tried these? Any particularly good or terrible models to watch out for? Do they play nicely with other pedals* ? And are they a good option for going amp-free, and/or silent recording at home?
*I play a lot of Blues, and Blues-Rock, so of course I already have a Tubescreamer clone and Tremolo pedal...