Best jitter correction. Fastest speed. You claim your Kenwood goes up to 32x and you've once seen 35x? My Plextor always goes beyond that. It finishes a full disc at its top speed, 40x (a little faster on longer discs).
99.9% of all CDROM drives out there do not do DAE at any speed comparable to their data-read speeds.
Price is one thing that you will not find Plextor beating out other brands in. I said best for the purposes of DAE. That doesn't include price.
Running EAC you should be able to compare how long it takes with one drive versus another. I'm pretty sure I've seen someone run through this type of test for a selection of drives. There aren't too many drives where you can get a perfect and consistent rip without using something like EAC at the drive's full speed.
Plextor's track record for DAE is unprecedented. I'm busy doing searches on other things right now, but I'm sure you can turn up plenty of info yourself using only google.
Bruno