I have an Ipad 3 (without built in GPS) has anyone any experience using either of the 2 GPS (Bad elf and GNS) in a Cessna 172 on a yoke mount?

I want to make sure the one I buy will work OK before ordering it. Thanks in advance

I have used both GNS 5870 and Dual XGPS150A with IPAD2 and both works flawlessly. Some report issues with the GNS that it is difficult to turn of with the swipe function, and indeed I also had issues with it but seemed to manage though. The XGPS150A can also be used with Android and other units.