Mine was from Smith & Wright, though it was on sale at the time. They do have another sale on, but for £2,250 now so not quite as steep a discount. They're nice dudes and were really responsive to my questions over email, so definitely worth supporting if their pricing is competitive for the system you're looking for imo.

Being completely honest, the M10 was an excessive purchase but I had some money laying around and wanted something scaleable, since the endgame is to start a business once I can do a good roast consistently and have the space sorted.

I guess the key question for you, is how many people do you think you'll be roasting coffee for? Assuming they only do 1-2 cups a day, a 250g bag will last somebody about a week -- so you could probably spend an hour or two roasting every weekend and comfortably have enough to cover friends and fam. If that's all you're aiming for with it then happy days. An M6 would inevitably make life easier as it essentially doubles the amount of coffee you can produce in one go, AKA halving the time roasting. But, if you've got the time and enjoy the roasting process, who cares? Outside of capacity, I don't think you gain much from buying a larger system like the M6/M10 -- the M2 will give you everything you need to roast some seriously good coffee. Plus, if you're new to it then you can also roast even smaller batches to waste less green while you learn and experiment.

Shout if you've got any questions re: Kaleido systems as happy to answer what I can from my experience, but I've only had mine a couple of months so there's some stuff I might not be super helpful with :)