I stil shoot the overpriced clunker for stills, my phase(s) and Contax(s), but it has now become the paid for underpriced system that has lasted 6 years, probably another 6.
I also shoot the R1's the majority of the time compared to the Scarlet for a lot of reasons. I don't find the weight of 3 to 5 lbs that much more, the genlock if I need it is an inexpensive ad on, it takes Nikon and PL lenses easily and most of all it's as analog as a digital cinema camera can get.
Also it's proven. My R1's have had no issues whatsoever, so when it comes to saving a few pounds I'll take no issues vs. a work in progress any day.
The thing I don't like about the R1 is there is no autofocus capability, but then again the Scarlet/Epic autofocus is barely worth it unless your shooting something locked down and static.
Bottom line is I'll bet I have the R1's for a number of years, the Scarlet I'm not that sure about.
Everybody works differently every one has different needs, but the R1 shoots a pro rezz proxy file, where the Scarlet takes a $13,000 Meizler add on to get genlock, proxy files and sound sampling. The Meizler does more than just that, including Ipad support and the future ability to send a video and audio signal to an ipad, but it's expensive and changes the form factor of the Scarlet to almost that of an R1. The Meizler also takes a different sized ssd card which when it's all said and done will raise the price to 15 grand. Add that to a 14 grand Scarlet package and your at $30,000 minimum before you stick on glass.
So the R-1's especially used are a bargain.
As far as Sony, I have the Fs100, use it for run and gun, kick myself everytime I do because color grading is difficult. I looked at the fs700 and didn't give it a thought because the 4k raw is a to come addition.
The Canons I have absolutely zero interest in. I know some people like them, but a 8 bit file is much different than a 14 bit file and until you've shot a RED next to any camera, still or motion and seen how much detail it holds across a broad range, it's difficult to explain.
Regardless, I find the way people view RED in the imaging world as strange. 10 years ago people would have killed for any RED camera, today RED is a very polarizing company. You either love them or hate them, with few in between.