Went with the IPV. So far, so good. Works as it should. Couple things I don't like. The charging cable that is listed on the box as included, actually isn't. Because of this, I have to remove the batteries to charge them externally, which means the cool memory settings reset to default every time. Total drag...I don't know what charging cable to buy for it...the connection looks like a 9 volt.
Other than that, happy.