Out door enclosures

I am planning some out door enclosures,
My options are plastic tub type, or purpose brick built ? both would be "in ground" with only a proportion above ground to help cope with winter temps.
I would like any pros and cons of both types please. And indeed any other suggestions most welcome !
thanks
john

I like the waterland tubs, but they are pricey. I plan on building my own version out of wood and fiberglass this spring. My plan it to have it on wheels so it is mobile. You can make an in-ground setup that is really nice, but if your breeding you will probably want more flexibility. If your trying to control a blood line, and you have several pairs to breed separately a large in- ground enclosure isn't going to be the best, you would end up having to do timesharing or something. For a scalable solution I am thinking roughly a 4ft X 2X2 box made of pressurized wood and lined with fiberglass with one third of it separated for land. I am thinking that if I cut 4 inch PVC in half length wise and use it as barrier trim around the edge to prevent any escapes. Another idea is to use pipe heating cable to insure that brumation temperatures do not fall below a set temperature. This is much less of a concern for in-ground enclosures as you have fairly consistent temperature below grade. Another consideration is being able to enclose it with plastic as humidity is a major breeding trigger, this is much cheaper with a smaller enclosure.