I bought a Krone 2801cv and am getting use to it. It is the same width as the one you are looking at, except impellers.
2 point hitch I can't say is easier to hook-up than a drawbar mount. However the weight on these Krones at the hitch is substantial so I'm glad it's on the lift arms and not the drawbar. I think mine is somewhere between 1,200 and 1,400 lbs at the lift arms. It puts a load on the tractor and I've added front weights to help keep the front down when going up some moderate slopes, as well as, help with firm front tires for steering. I would not want this thing pushing me down hill without a larger tractor than I have.
The swivel gear box is the cat's meow. 90 deg tight turns without any PTO issues. You have to be careful though, it's easy to put the rear wheel into the main frame on a tight turn.
HP - I'm running mine with a 70 PTO hp tractor (International 756) and haven't had any issues power wise in very heavy, wet grass - level ground. However, I'm running about 5 mph, maybe a tad faster. Our fields are irregular shaped and small, so that's about the manageable max ground speed which helps I'm sure with hp demand. Also running the high skid shoes for a 5 inch stubble cut - which I feel helps reduce hp demand (think lawn mower mowing at 2 inches vs 4 inches in tall grass).
Cutterbar - VERY QUITE. That was a big surprise for me. I expected this thing to sound like a jet or some other make disc mower conditioners when rev'd up. Cut is clean. I think the curtains are somewhat lightweight, don't know how much they'd help with a rock flying out. Mine has the Safecut shear hubs which requires two concentric roll pins (cheap) to repair. Mine also has the quick change blades.
IMHO - these Krones are VERY heavy built, give a good clean cut and from what I've read (still have to live it) have a very long service life.
FYI in your due diligence, there are free for the downloading brochures (over 40 pages - no mfg offers more literature or youtube videos of their mowers IMHO than Krone), operators and parts manuals. Again go to Krone North America and you can download all this stuff for free; good reading before buying.
Not sure what's the difference between the 2800 and 2801 series, they look similar to me.
I do not fear parts availability long term.
Good luck,
Bill