There are always trade offs for sure. I've had to send back 2 batteries but they've always been great customer service wise. I'm looking forward to the new remote but have been super happy with the Rove. I've done a lot of shooting with it and haven't been disappointed yet.
It's important to remember that it's not unlike any other electronics. There are always failures. I'd venture to guess that although there are reported failures, there are many more perfectly fine units we never hear about because they just work (for the most part).
I hear you but for some reason it seems lot of folks do have quality control issues. For me paying $100-$300 per strobe for a strobe with much better quality controls is worth it. And I just a hobbyist.