What was the deciding factors?
KM7000 and RICOH 751ex
Printing speed and quality almost same
Both can print duplex 300gsm paper, but ricoh datasheet said it can only print 256 gsm duplex, although ricoh rep told me it really can do 300gsm and I also test that with no problem.
For front to back Rigistration, ricoh is better than Konica, but we are just a digital shop, so Konica is ok to us.
For finishing part, SD506 is really stronger than ricoh's booklet finisher. It can improve our productivity.
Both have a de-curlling part, ricoh has a water cooling system which Konica does not have.
Konica's fiery IC306 is better than ricoh.
In the beginning, km 7000 price is much higher than ricoh c751ex, so I thought ricoh would be my final choice.
But Finnaly the cost of these two machine are almost same(both include booklet maker and trimmer), printing cost are just same. I think Konica and ricoh rep both try their best to match my request price.
So finally I choose Konica as I like Sd506 too much. I hope this will be a wise decision.