I had an Intex 15'x3' inflatable and we used it for 3 years and loved it.

1) A level site is critical for ANY pool. You can maybe get away with an inch out of level, but a half inch is the max recommended.

2) In 3 years I never had a hole ANYWHERE in my EasySet. My wife's cats are indoor cats, and I used the EasySet cover religiously. It is very tight-fitting, sealing the pool, and covers the ring completely, adding protection. It also greatly reduces chlorine usage since it blocks all UV rays and prevents evaporation of the chlorine. I did have it empty when a hose sprung a leak while on vacation, but I don't blame the pool.

I think the EasySet is an EXCELLENT starter pool. When you are floating in a lounge chair, with an iced drink, on a lazy afternoon, it feels JUST as good as big pool. And the water is just as wet. I would, however, be leery of the clear-sided one. On mine, the sides were HEAVILY re-inforced.