In my country (the U.K) the RME adi products have a 5 year warranty if bought from an official distributor. I have a few topping products and they are great but I can't see topping offering anything like the post sales backup you get from RME.One dB better SINAD, or two at max voltage A-weighted. That's it.
Sure thing. RME is actually making good and reliable products.