We purchased a L65500 in October from the NOLA SGIA show, where we also saw the L25500. After working the L65500 for 3 months or so, I wish we would have bought 2 L25500 60". The L65500 replaced our two Seiko 64S solvent horses, which we had about 4 to 5 years. Those were great printers and one person could manage them both. The L65500, not so much, it takes two people to load the larger rolls.
One person can load some of the rolls. The L65500 is for longer runs, where a shop may be running one image hundred's of times, the L25500 is more for the shorter run shops, like us. We would change media on the 64S probably 8+ times a day, where if we change media 8+ tines on the L65500, it will take 10 hours to run what we have.
We have had to re-adjust our products that we offer Green because of the L65500 management. The L65500 media has to be taped to a take-up spindle, which waste almost 6' of media before the print starts! The L25500 can be changed faster and by one person, and the media doesn't have to be connected to a spindle, much like the 64S and the HP5's.
Now we have been looking at the L25500 for the past week or so to compliment our L65500 and just found out something interesting. Although both models do use the same latex ink, there is a color shift. The explanation that our supplier gave is that the difference comes in the manner in which the ink cures in both printers. With the L65500 printer the length to traverse the platen is longer and the print head is open to the air. With the L25500 printer the print head travels a shorter distance and the print head is enclosed in the printer shell and air is forced across the media to assist in the drying of the ink. This difference in ink drying mechanics has a net effect that the L25500 print has a slightly more matte finish and the L65500 has a more glossy finish.
Media wise, the L65500 has printed on every media I can through at it, except for gloss banner. The plasticizer that the manufacturer applies to the media to keep it from sticking to itself, that is what makes the noise as it unrolls, interacts with certain latex colors and causes this effect that looks like a laminate was applied and then removed, it's dull and spotty.
I am going to be starting new threads on all of the latex issues that we have seen and hopefully will help in some buying decisions and maybe HP will fix some of these.