As stated above, the differences between the 2 come down to a lot of personal preference items.
We own a Castia 2000 17SD and it is a great trailer, so my comments are not intended to shortchange it. Previously we owned a Trillium
13 and I have had a pretty good look at the Escape 17.
The more vertical shapes and wall slopes of the Escape 17 are virtually identical to the Trillium
13 which we found to give a sense of more openness on the inside of the trailer, even though the width at the beltline of all the Trailers is virtually the same.
Another major design plus of the Escape is that all of the interior work is attatched to cleats mounted inside the trailer rather than drilling holes throught the structure to fasten things together. These rivets which go right through the structure on the Casita have been known to pop and leak, although through regular monitoring of these have not caused me any more than a couple of small leaks
which were remedied before any serious problems occured.
I like the layout of the Escape better because of the design that includes a front window at the front dinette. The only short coming of the Escape in my estimation is that the width of the bed in the rear dinette section is about 6" narrower than the 54" bed in the Casita.
Your preference on the shower / bath variations will probably be based on how much you use the facilities for what. The Casita shower is slightly roomier, but not much. In our case we usually use park showers if they are reasonably clean, so the shower in the trailer is not used that often, for pottie service, one probably works just as well as the other, which is what we use the bathroom for the most. In the Escape I would get the finished shower though, we find it handy for quick dog washes etc, as the parks really frown on pets around the shower and washroom facilities.
Right now, for a Canadian, the price on a Casita has a slight advantage because of the $ difference. We bought ours used about 3 1/2 years ago when the $ was the other way and we didn't know of the Escape at that time. If I had it to do over again, I think I would choose the Escape if there is some way that the design could be adjusted to get just a little more space in the bed.
There are a few small design features in the Escape that most people don't even know about which will help the longevity of the unit. The Trillium
, Casita and Escape all have full molded fiberglass underbellies. but only the Trillium and the Escape have drainage channels around the perimiter of the body to carry away any moisture that may inadvertantly get into the unit. Escape also seems to have done a better job of prepping their body to accept the appliances that they install.
I am inclined to agree with others that the inside A/C unit (which could likely be upgraded to a small heat pump unit) creates a much cleaner external appearance, and probably runs quieter than the roof mount units. If the Escape A/C breaks down, they can also be replaced for a lot less money than the others.
The Casita has the combined door & screen unit which is nice. I have a preference for the finished appearance of the beltline joint on the Escape over the Casita-Scamp-Boler style of joint.