Your mileage may vary, of course, but CM 10.1 has been the MOST stable ROM I've used since I got the Bionic (and that includes the stock ROM from Motorola/Verizon). It is PURE AOSP plus additional features not present in any other ROM. You have your choice: if you want "Bleeding Edge" then go with the nightlies... but if you want "Stable," then the stable versions of each release are as rock solid as anything else I've seen. CM is also the single largest custom ROM project out there, with a lot more "eyes" on the code than some of the other variants available for the Bionic. Eclipse was good... CM 10.1 is better. Can't wait to see what's in store with CM 10.2 and beyond.