Positive Grid Spark Neo

I've got this as a replacement for Boss Waza Air, since I really got tired of Boss' poorly made mobile app. Spark app is very good and has a lot of useful features. Plus my Waza Air sometimes had connectivity issues, when trying to connect transmitter with headphones (also it had obsolete micro USB as a charging port, yikes!).
Spark Neo resolves all of that - connection is very stable, app is superb. However, I still think that Waza sounded better, especially on mid and low-gain. Plus it had neat spacial audio feature, which Spark does not have.
I also liked that Boss had 5 presets available, while Neo has only 4. This thing also does not have individual volume controls for guitar/bluetooth audio, so you have to adjust volume of backing track using your phone.

Considering that it's MUCH cheaper than Boss Waza, I would rather go with Neo.

They sound great, pack down to next to nothing, have reasonable battery life and allow you to practice without any wires. Stream audio via bluetooth (the app/from a laptop/run guitar pro on a laptop/tablet). Works a treat while traveling too.

The headphones isolate well and are comfy, the app is easy to use and offers a ton of tonal options and other things (tuner, metronome, AI based tone builder, backing tracks, etc)

I wish the foot switch would work without the app (reading comments you need to have the app connected) and that it did incorporate the looper - but that would push it to 6/5 stars.

I used to own the alternative (from Boss) before and I prefer the Neos by a million miles.