@Ankit: Some of the settings icons in the Settings>Personal are wrongly configured in current builds, they dont appear in the menu. As you know, these icons are creates using the registry, and there, these builds have a value named Redirect="exe name" which was causing this problem. DomSim has rectified that.
As far as best build is concerned, if you want new UI, i guess 23028 is having the newest UI code in the COM3 branch and is quiet a usable build after applying some tweaks.
23403 although is from the COM4 branch and so its OS code is newer but UI is similar to 23022 so not very good. Wait for more builds to come in this branch.
23601 is not recommended, its OS and UI code both is older.
219xx series is just like before,contains experimental unstable features.
As For me, i am still on 23016, the most stable one for me, without any memory leaks, superfast, giving no problem at all
Will upgrade when some good builds appear in 2340x series, the COM4 branch i mean.