the applause ukuleles have really nice electronics... but personally, i dont like the ergonomics. but then again, aldrine owns two of them.
other than that, if you want to get the best sound out of your ukulele while plugged in, without having to install an expensive pickup of your own choice, invest in an LRBaggs para acoustic DI and it will blow you away. that little box can do wonders for some of those cheap electronics that come on so many ukuleles.