I've unfortunately had to deal with both of them. Go with Jasper, hands down. Frank's came to our home twice for a leaking mainline and somehow still didn't fix the problem. We paid for two visits and still had a puddle in the yard. We finally gave up and called Jasper Plumbing Services. They showed up exactly on time, the technician was extra knowledgeable, and he fixed the whole thing on the first try. Save yourself the headache!