Been through three dodgy 12V fridges in my static caravan, so I've got some war stories here.
The Waeco CF range gets all the hype and fair play, they're solid, but you're paying premium for the name. I've found the Fogstar units punch well above their price point — currently got one humming away quite happily on my 200Ah lithium setup. Doesn't hammer the battery like the compressor models do.
Here's the thing though: most people don't realise how much your solar setup matters. A naff fridge on a decent Victron MPPT will outlast a fancy one on a dodgy PWM charge controller. Just saying.
If you're serious about off-grid, avoid the thermoelectric rubbish — absolute battery killers, won't keep anything properly cold in summer, and you'll be sweating more than the fridge. Proper compressor or absorbption only.
The Dometic RM series is what I'd recommend if budget allows — bit pricey but the efficiency is genuinely impressive. Seen some folk pair them with a small Renogy solar panel just for the fridge and they're sorted.
What's your setup looking like? Battery capacity, solar wattage, how often you're actually parked up? That'll make a massive difference to what actually works. No point buying a super-efficient unit if you're only getting 4 hours of usable sunlight in winter.
Curious what others are running — are you lot finding the newer units hold their temps better than the older models?