I have an FM9 but this is really tempting. As much as I'd like to think otherwise, >90% of my playing is with basic sounds. OD, mod, delay, etc... I really don't need the horsepower of the FM9. The remaining 10% where I do use the FM9 power is really doing it because I can. It's overkill.
I also really like knobs. Yes, not being able to see the current settings on each patch is annoying. The wireless to Boss Tone Studio is an improvement but a screen would be better (but it's never happening on an ME box). IMHO the prime usage for the ME as an amp/pedalboard replacement. In a live situation I'd live on one patch with a few extra for unique song requirements.
Things that I find attractive about it:
1. Boss effects. I tend to like them.
2. You can switch out one of the effects in each type for a different one. Ex: Replace Recti Stack (which I'll never use) with Boutique.
3. Battery power.
4. Boss AIRD. I've had a GT-1k and I like some of the amps. I only need a few amps.
5. Knobs.
6. Great price.
What I hate?
1. The FX loop limited to right before or after the preamp is weak but honestly, how often would I or the millions who will buy this use the FX loop?
2. Digit only display. Really lame in 2023.
3. Only 3 IRs? That's cheesy.
4. Can't change the factory speaker type to a different factory speaker. It's either the factory matched cab or one of the 3 IRs.
5. Amp on/off tied to a footswitch. I can totally see myself accidentally turning the amp off while performing. I can't think of a use case where you'd want to turn it off on the fly with a footswitch. They should have used that switch for something else like dedicated CTL and had a different way to turn the amp sim on and off.