Yes, Z and ZR have pull down toggles. 4.2 update will give us 8 toggles.
Performance wise even the cheaper SP will own Galaxy S3, the Z/ZR totally owns the Galaxy S3
The 8 GB internal memory is a big issue. U will get around 5.3 or 5.8 GB depending on ur phone. Apps and games,alongwith their temp file,downloaded file,save file etc will be saved in ur internal memory. Games like NFS MW will eat up nearly 2GB ..i have like 50+ HD games,all ranging from 200MB upto 2GB, and i cant install more than 4 or 5 high end games at a time. There is no way u can have Real Racing 3, NFS MW and Bards Tale installed at a time.
Not just games,apps causes headache too. My 9gag app has over 60MB cache,cant modify the destination ofr saving pics. Video editors like FX Guru saves all "effects" in internal memory and that hogs up space like anything.
btw,my bro who owns Xperia Z is already low on internal memory
so i guess it all comes down to our personal usage..