Old Concrete Pool-what automatic should i try

My house came equipped with an old concrete pool with epoxy paint. The sides are at right angles to the bottom. I would like to purchase a suction powered automatic and was looking for suggestions. I had a Barracuda and it never left the bottom. Didn't really do much at all.

Thanks for you help
Paul:confused:

the hayward pool vac is by far the best suction side cleaner if you have a powerful skimmer, however i would recommend the dolphin because then you have your skimming action still and then you can also have a pool cleaner tha filters the water as well as cleans the pool.