Well, for good or ill, it is a done deal. Sold the 830 today. Used the PayPal at B&H to order a Blu Win HD LTE in orange. Guaranteed to get 10 and already has Update 2 waiting for OTA when I unbox it. SD 410 SoC to boot. No Lumia Firmware, but my experience with the 1st gen Win HD has me salivating to get this in and start setting it up. I'll rest my 1520.3 for a bit and drive the Blu. I migt even look into going Dual SIM full time and split Voice and Data. I can use a dedicated Data SIM for my 2520.
Good Luck to all RM-983 owners. I'm out.