Sorry for the late reply, been a long old day!
I bought the Mk1 cannular about 12 months ago (mk1 being the manual one without the splash guard or the additional Chuck). I bought the European Chuck for it and that works perfectly.
I was authorised to buy it so that I could brew a few batches and can each one for our wedding. I don’t think I would have been allowed otherwise
It’s very very tedious to set it up and it is equally difficult to use it consistently. Basically you have to apply just the right amount of force to the leaver when seaming and you also have to seam for the right amount of time (about 0.5 seconds to a second on each roller) otherwise you’ll get a poor seam.
It took me a lot of cans, trial and error and perseverance to get it right but every now and then you’ll get a dodgy seam through human error (usually 4 or 5 cans out of say 60).
I think the build quality is very good. The design is poor- very little room for adjusting the rollers and it’s impossible to get a feeler gauge in there properly. Also the power supply seems unnecessary and is very expensive
I think kegland must have had a lot of people getting in touch with problems from people not calibrating it properly or who were using the wrong technique with the manual leaver. Just my opinion, but I imagine that is why the newer cannular is ‘automatic’ to remove human error!
If the automatic machine is easy to strip, repair and service then I would lean towards that. However, the beauty of my older machine is that it’s very very simple and if anything ever breaks it will be straight forward to take apart.
Overall I love the machine. For me it’s well worth the money. I don’t can every batch, usually just a few cans to give to friends. It won’t improve your beer, it’s unnecessary at a home brew level, but it’s a great little thing to have!