We have four film scanners:
A Cintel CRT HD machine which has excellent Dynamic Range as the PMT's are 14bit A-D and compete well with HDR scans on a CCD or CMOS based scanner. The CRT is lower resolution and has more noise but makes an excellent image and has been used on broadcast TV and in Features.
The 4K Xena Dynamic Perf (sprocket-less optical registered) which has a CMOS sensor with up to UHD resolutions at 15fps.
The 5K Pin Registered True RGB Xena which is a (now new) 5K 7.4u monochrome Kodak CCD for 16mm and 35mm which has multi flash HDR,
The Imagica Imager-XEplus which is a 35mm (up to 6K Vista-Vision) pin registered line scan scanner.
The $50 test roll is on the Cintel CRT machine and looks quite good for reversal, I have never had any reversal that the Cintel could not capture the full density of the film.