I have posted here before about my Zoom MS-100BT mini multi-effects pedal. Buying that pedal two years ago was the beginning of re-exploring pedals in general, and I have acquired a lot of knowledge (and pedals!) since then.
The cool thing about this pedal that as Zoom modelled other famous pedals, you could purchase (for a couple of bucks) these new pedals. This is how I learned about many pedals that I did not know existed prior to this journey. I have done a long thread on my pedals, and which ones were MS-100BT inspired.
I recently popped one of the outputs of MS-100BT, so it is now mono. Not a problem for most uses, but I had a look locally and got a second MS-100BT and a MS-50G, both for very reasonable prices. The MS-50G did not have many of my favourite Zoom modelled pedals. But since I mostly use my MS-100BT for delays and choruses, on my pedal-board, the MS-50G was going to be a good backup for that function.
The MS-50G has a couple things that the MS-100BT does not. It has a USB port for uploading firmware and sounds. (The MS-100BT does this by Bluetooth and an iOS app.) The MS-50G also has a PC/Mac program/app for editing. I have not tried this yet, but will do so soon.
Zoom has recently discontinued both pedals, but they have also given away all of their sounds for the pedals. MS-50G owners can download and install the latest firmware, and then use a second install program to get all of my favourite Zoom modelled pedals. Because the modelled pedals offered take more space than the MS-50G has memory, you need to unload pedals you are not using.
MS-100BT can use the iOS app to download all of the modelled pedals available. Now all for free.
So now, my MS-50G has all the Zoom sounds that I use. I can put it on my pedal-board, or leave it in the car for jams or as a backup.
I highly recommend these pedals, and now that they have all my favourite modelled pedals, they are worth much more than the $100 or so that they are selling for used.
I would recommend the MS-50G for most players, as it is easier to install the new pedals, and it does not need to be tied to an Apple account.