Lance made the 845 with is a nice camper. We really like our 2005 model. They have changed numbers since the 845, but it works real well for the two of us.
Obviously I like the Adventurer line. It's a 4 season camper, good holding tank size, great floorplans, thermopane windows. Very reasonably priced, I got mine quite a bit less than MSRP. I mention floorplans because it's very subjective. Lance makes arguably the most popular truck camper line-up but I don't like their floorplans.
If your pockets are deeper than I would look at Bigfoot and Northern Lite after NL rebuilds.
Arctic Fox has one camper that does not have a slideout. It is the 865 model. It is not shown in the new brochures but is still available through some dealers. Apache is one of them. Do a search on here as there was some discussion of them on here a few weeks back.
Then you have the Northwood Manufacturer that besides Arctic Fox makes Wolf Creek campers. 3 models, none have slides.
Northern Lite and Bigfoot are 2 others that have camper with no slideouts. In fact none of their models have slideouts. All fiberglass shells.
Northstar another good manufacturer that makes campers without a slide.
Palomino is another line without some models without slides for a little less money.