I have a 1kw Must inverter and a Revov 200hr battery on my unit.
Base load about 40w and peaks at about 210w
Read somewhere about the fan noice, personally found it very tolerable and not a problem and found the noice to be a non issue, and my unit is next to bed. My load is light enough where the fan does not stay on during LS (pc, router, switch, 4w light) more than than and the fans stay on during LS, but even then it's quiet
Switch over not a problem, all my devices stay on. Had two instances of it taking "longer" to switch over and pcs and router shutting down. But chalk that up to power dipping slightly before disconnecting completely and causing issues.
Like the fact that it can be muted so no beeps when power fails etc. Back light can also be switched off. Menu easy to navigate and set up
Only "problem" is I for some reason can't get custom charging profile to work. But the lithium option works fine and charges battery full no issues
No pv because complex
Want to try the wifi attachment at some point when I have some cash to burn. But it's not needed to use or set up the unit
Would certainly buy Must again and looking at their website, they are actually a large company with a wide range of products including batteries and been around since 98 I think