I would consider the Coachman 310 too.
My reason for skipping the kitchen slide: I didn't like how much area it took under the awning. By the time the slide was all the way out it felt like there wasn't much room under the awning to hang out...which is where everyone tends to hang out.
It is def. bad ass though having that much room. It's heavy though. 8K dry it claims.
Outdoor kitchen is a must for me. Even if you don't cook out there, the fridge and sink is out there which will prove invaluable. Fridge serves as overflow for any food/condiments and the beer/pop. Anytime I cook, I use the outdoor stove. I hate cooking inside.
Fiberglass sides are nice too. They are one solid piece with insulation between glued between. It's a solid assembly. It's amazing how well the heat says in when it's cold out. Aluminum is built like a house with studs and bat insulation between the walls. Also peek underneath. Make sure the undersides are enclosed and that they have "cold weather" package that ducts heat down there so the water lines don't freeze if you are camping and the temps dip below freezing.
go to as many places to check out campers as you can. This time of the year they are willing to deal since most aren't looking for campers. I was able to play a couple dealers against each other and get a screaming deal. One dealer said "we don't haggle" so I said ok. Went to another and they sold the same camper but the model a step up. Plus it had more features like the TV included and electric tongue jack (a must) included...and it ended up being quite a bit less at the end of the day.