I don't have the Nexus 10 but just giving my opinion of the two recoveries being used on 4 different devices I've owned.....
I like TWRP the best. It seems to perform much better, the write/read times seem faster. Its easy to theme for those into that. Also it broke the mold and got away from the same way that CWM has done things for a few years now.
ROM Manager, I won't even consider in this group. I've used it too many times and its just caused too many headaches on my devices.. Losing recoveries and other things and I consider myself a very well educated flasher that knows how to maintain and set things up but ROM Manager always seems to throw a wrench in there when you least expect it
If I was to consider using a 3rd party app that is tied to my custom recovery and provides latest ROM updates and downloads then why not give Goo Manager a test drive ?