I had a fox pro shockwave, had a problem with it, sent it in for repair, worked for a while, had another problem, frustrating, returned it for refund. From the folks I talked with sounds like I got the only lemon ever made. I will say it was the best sounding caller I have every had. The last problem was the remote could not control the unit it could not turn the sound up or down or turn the unit off. I blew some pretty sweet setups screwing around with it trying to get it to work. It was really embarrassing being out with friends or my grandsons. Fox pro did offer to fix it again. Everyone talks up their customer service and that's great, but I would rather their product work. Lot of fox pro worshipers out there. Maybe my expectations are different from others. When I pay 500/600 buck for something I expect it to work. I have entertained going back to a shockwave, but if I had problems again with it I would feel stupid. Maybe that fusion? Maybe something simpler. It seems to me if my garage door opener can work all the time then someone could invent a caller that could work. This was my experience, others may have had a different experience, but was mine.