RUN!!!
I've had really bad luck with Konica-Minolta copiers. (40ppm is slow btw)
Ask your sales rep about "cost per click" AND how much is the service agreement that they force upon you. AND does the service agreement include free toner and free delivery of the toner?
Once you add up all those numbers and then you can soon realize that your cost per copy is going to slightly higher than you anticipated. Any messed up copies, you pay for, proofs, you pay for. The only copies you don't pay for are the ones the tech runs when they are working on the machine. But insist on a meter reading before and after. Had a tech run nearly 250 copies one time, when trying to help us dial in the timing of thicker card stock from the large capacity tray. They could never get it right, and when you took the prints back to the cutter, none of the crop marks ever ended up matching. They averaged about 4 "groups" of matching crop marks. Had to go through sheet by sheet, fan them all out and sort them by crop mark distance and offset. And forget about paper skew. I'd say the Konica had the worst skew out of all our copiers.
I think cheapest overall operational cost was the Sharp. But just not the greatest prints. Decent, just not anywhere near our Xante Laser Printer. (Which is an OKIdata)
Xerox was out nicest machine, but needed service a lot. Same with the Canon. But with both of those you'd need serious volume.
You mentioned KIP! (C7800) Now, there's a machine I'd love to have in my shop! It's basically a 36" laser printer that prints on rolls, and super fast! There's a great untapped market potential with that kind of speed. Think about 3x8 banner (on tyvek, or polyproplene) printed in 30 seconds! While the customer waits. No hemming, will accept grommets, and does last outside about the same amount as regular banner.
But if you want a large laser printer, that's easy on the wallet, and the lowest cost per page, and super fast, runs 12x18... look no further than the new Ricoh Aficio SP831DN
I have that printer, and I love it! Been a workhorse, and never needs futzing with. I can now buy toner for $41 per color! My cost per copy is more about the paper I use, rather than my toner coverage! I average 5500 12x18 copies between toner changes. Almost always full coverage. I do lots of glossy labels and package design for quite a few clients. I can run 110lb Mohawk Cover through the bypass, and crop marks are always on! Been a huge money maker, and I don't think I paid more than $3600 for it.
Oh, and if you're real careful, you can actually run regular vinyl through the machine. Just need to laminate it right afterwards so in handling it, it doesn't scratch.