Some random thoughts:
We have a 2000 Sunlite that we have been very happy with. Had one or two little things, a hose leaked and I put better connectors on the battery terminals, but overall very well built. I haven't checked lately, but when we were shopping they had a nice long bed model with a combo toilet/ shower. We have a short bed model with the furnace and 3 way refer, and its a great set-up for us. I would buy a Sunlite again in a heartbeat.
We also looked at Palimino's, but the four on the dealers lot were so poorly constructed I though they would fall apart right there.
Another option is the Four Wheel Camper. They seem pretty well built, but they are more spartan and a lot more expensive. I don't recall them having a shower.
I have seen northland's, skamper, and Jayco pop-up campers too, but don't know anything about them.
And then there are always the Alaskan's. Pricey, but nice.
-Vic