GMG is easier to use, and produces a more subtle smoked flavour.
Charcoal smoking in the wsm can give a more acrid smoke flavour if too much wood is used.
If you have the kettle there is an advantage that the wsm uses the same heat source. But the GMG is quicker to get up to speed and has the electronic temp control, food probe and the food cooking profiles.
To buy a PID for the WSM costs a few extra quid which puts the price to a similar region as a GMG
Sounds like I've got a bit of research to do in PIDs. I like charcoal smoking but I've found there can be a lot of babysitting throughout the process (might just be my kettle) and anything that cuts that down in the early hours of the morning is a good thing.
I like both
GMG is easier to use, and produces a more subtle smoked flavour.
Charcoal smoking in the wsm can give a more acrid smoke flavour if too much wood is used.
If you have the kettle there is an advantage that the wsm uses the same heat source. But the GMG is quicker to get up to speed and has the electronic temp control, food probe and the food cooking profiles.
To buy a PID for the WSM costs a few extra quid which puts the price to a similar region as a GMG