My favorite continues to be hardware from Prusa. They're rock solid and respect user freedoms (serviceability/upgradability/hackability). Being made in the EU is also a big upside for me.
I've had an MK3S+ for years and even though it's a primitive machine in comparison to the current Bambu hardware I see no reason to upgrade to something else. It just keeps printing whatever I throw at it and the results continue to be very good. In fact, I seem to have better luck with it than the Bambus I sometimes use at various hacker/makerspaces.
If you just look at the numbers (speed, volume, ...) against Bambu hardware they're not as good, but the reliability and simplicity make up for it IMO. The main missing feature is multi-material support, but that's something I'm not really interested in due to how wasteful the current technology is.
Bambu AMS is useful even if you're doing single color prints - you don't have to worry about filament running out, it'll just continue on the next roll if it has the same filament loaded on two slots. It can also print multiple (small) objects in the same job with only one filament change per object.
Right, but I'm also wary of the extra complexity and whether it's worth it for me personally. (I've seen Bambu AMS systems act up, and I also know they're picky about spools).
I'm using the AMS mini with an A1 together with a Sunlu filament drier - never had a single spool on the AMS itself, the filament sits in the drier and the AMS is empty on top of it. Works great with all filament brands I tried.
It's wasteful in part due to Bambu's defaults for purging; they're really high, I imagine to make it "foolproof" but it means I see people (like the YTbers who made a stop motion film with 3d printed objects) waste a loooot of filament, because they have no idea it can be dropped quite a lot before colours start mixing.
It would be lovely for the BL printers/AMS to use a colour sensor at the hotend and then you can run a calibration on purges to determine what is an acceptable threshold when transitioning colours and use the absolute minimum purge amount.
I suppose more complexity (like the sensor you propose) would increase the chance of failures or something going unexpectedly. Bambu Labs seems to be going for "It Just Works", at the cost of being wasteful. Seems to be working as a strategy, giving the rave reviews it's getting...
I'm not using my AMS much, precisely because I simply cannot stand the waste and the additional print time.
I've had an MK3S+ for years and even though it's a primitive machine in comparison to the current Bambu hardware I see no reason to upgrade to something else. It just keeps printing whatever I throw at it and the results continue to be very good. In fact, I seem to have better luck with it than the Bambus I sometimes use at various hacker/makerspaces.
If you just look at the numbers (speed, volume, ...) against Bambu hardware they're not as good, but the reliability and simplicity make up for it IMO. The main missing feature is multi-material support, but that's something I'm not really interested in due to how wasteful the current technology is.