Random thoughts . . .
I think you cannot go wrong with either a Jotul or a Woodstock stove . . . both are very well liked here with many real life users and fans (fanatics?) of both brands.
I think you may do OK with the Oslo . . . but at 2,200 square feet I think you may be close to its limits. Perhaps folks with homes larger than mine in your area (I'm coming from a 1970s, two-story, 1,800 square foot cape here in Maine so changing those variables -- going further south, better insulated home, size of the home, etc. -- can change things.
I will say I don't think the Oslo is particularly inefficient . . . just not as efficient perhaps as a stove that uses a cat. It's not like it's using technology from the 1800s.
That said, the only real way to get those crazily long burns are with cat stoves . . . but you can do overnight fires with large enough secondary burners . . . which is good, otherwise I would have a tough time of it.
Ash pan . . . I wouldn't let this be a deciding factor. If you come from a stove that had a useful, functional ash pan, it's understandable that it may be a consideration. However, folks who have stoves without ash pans typically do not mind the loss of the ash pan. That said, I know I would miss having an ash pan as the Oslo's ash pan is nice.
Screen . . . this is one feature I would not even bring into the equation. Like a lot of folks I thought about this as well . . . I mean the idea of having a fireplace like experience in my woodstove . . . what's not to like . . . until you see that nice view of the fire, hear the snapping and crackling and feel the heat . .. and then you realize that buying an expensive item like a screen that folks who have bought say is rarely used is not all that needed or desirable.
Maintenance . . . a non-issue. All stoves need some maintenance . . . I think you will find most cat users will say the occasional brushing off or vacuuming of the cat is a quick, simple procedure . . . and for many having to replace the cat in X number of years is a good trade off for being able to get those super long, low burns in the Fall and Spring as they can save money on the wood usage.
Reliability . . . I would say this is a wash. Both Jotul and Woodstock are near legendary for their reliable stoves. One plus is Woodstock's habit of sending free replacement parts when issues are found with newer stoves . . . this says a lot about a company when it finds an issue or improves on itself and remembers its past customers.
Customer service . . . Woodstock's customer service is legendary . . . and their parties are pretty fine as well. With Jotul I suspect it would come down more to your experience with the dealership which seems to be pretty good.
Wood length . . . sure, it may take some time to zing down the wood smaller if need be . . . but I would not let this potential one time event be the deciding factor for a stove that I would be using for many, many years.
One thing that may not have been mentioned . . . the hearth . . . what is the hearth you have currently and will it meet the R-value requirements for both stoves or will it need to be beefed up?
Final thought . . . as stated before . . . I don't think you can go wrong with either company. Both manufacturers and models are pretty darn nice. Truthfully, if I didn't love my Oslo so much I would probably have sprung for the PH.