If you get one, it's always the one you didn't buy!
I have an Apex and love it, although we got into an argument after a year in a half of solid performance, an update in May showed the true colors of the SD card and I had to send it in. I flirted with Hydros heavily for the couple of weeks Apex was gone. But once I got it back and restored the settings, we made up.
If I had dumped Apex, like some did after that update, Hydros may have let me down with an update of its own weeks later that saddened many Hydros owners.