I have an OG Skytrak and love it. It occasionly has a misread or no read but it is more than good enough for my purposes. The distances are spot on for me also.
I do also have an original Rapsodo MLM that confirms my distances but I have thought about selling it since I use the Skytrak much more. I have also paired the Skytrak with GSPro and it is a great setup for th money.