Shore power air conditioners

[mayble]

What do you have and how well does it work for you?  Window/wall unit or portable?  Permanently mounted or removable?
I'm weighing my options on AC for use while plugged in to shore power, either at a campground or driveway surfing.  I'd rather not have it hanging out the back window if I can find an easy way around it, maybe vented through the back door.  Portable units look like a good option if they work well but take up a lot of space.
I've seen some nice examples on here but hell if I can find them now
Thoughts?

 

[ArtW]

I have a window unit mounted through the back wall of my Travel Trailer, works very well
If you don't want it sticking out, Coleman and Summerland Mini bothe use a system where the window unit mounts to a built in shelf in their small units, with a pivoting louver panel to let the air exhaust when the unit is on, and the Casita like of TTs uses a window unit mounted in the bottom of a closet space with. I assume, a vent to underneath, which would certainly be less likely to develop a leak
http://www.generalrv.com/product-keystone-rv/summerland-mini-travel-trailer/1700fq
http://casitatraveltrailers.com/patriot-deluxe-13/

 

[GrayWhale]

Portable A/C unit and route the exhaust hose out of one of the cockpit windows. I will be doing this once I find a cheap A/C unit.