Howdy from San Antonio! Well, I'm probably not going to be much help here. Like most POD people, our point of reference was contrasting from tents and/or tent trailers. Upgrading my TV was NOT an option so I was pretty much locked into an R-POD.
When it comes to weight, space, amenities, and warmth of interior, I really don't think there is a competitor. In my opinion the R-POD is in a class all of its own. The plastic egg shells (Scamps and Casitas) aren't for me. Weight being the key issue. I will say this, camping with 4, I believe you will appreciate the extra space, although not much, that a model with a slide has to offer.
Edit: I should add that if I had a higher capacity TV and was going to camp with 4, I would seriously consider a bigger, heavier camper with more space.
Good luck Sir,