who do you think was  better  also  whats youre fave album by them and song  

right ill start  
to me  david lee  roth  was comady i mean i loved him  but he is a show man but then again that was what made van halen apart from eddy van halen  guitar skills god he was amazing  
but on the other hand when sammy hagar became volcalist after  david left the band   sammy hagar took over  and made them more serious (50/51 had more serious lyrcs than jump )
so it works on both lead singners to be honest it is hard to choose  so iam going to leve it up to you  to decide who was better  whilst i go listen to  those two albums  
heres my fave songs by them

van halen with david lee roth  
jump
hot for the teacher pannama
running with the divil ( i heard a bit of it on tv )
with sammy hagar
why cant this be love  dreams  and love walked in
cant wait to see yours

I think there both great in there own way. But as Lead Singer for Van Halen, I'm going with David Lee Roth. He has alot of charisma and style.
Favorite songs: Hot for teacher
                     Eruption - You really got me
                     Ice cream man
                     Cradle will rock

Tim
RATT-n-ROLL

David Lee Roth could kick Hagars butt

Diamond Dave gets my vote. Some of my favourite VH songs are:

Ain't Talkin' Bout' Love
Unchained
Beautiful Girls

DLR, hands down.  He put the fun in Van Halen.  Loved Sammy in Montrose, but he brought a certain amount of "serious musicianship" (translates= corporate rock sound) to VH which I could not enjoy as much.

Atomic Punk
Unchained
Runnin' With the Devil
Ain't Talkin' 'bout Love
Mean Street
Hot For Teacher
Drop Dead Legs

how about that lame-o singer from Extreme the Van Halen brothers brought on after they dumped sammy?

man, that pairing did not last!

they should just bring dave back for a few more albums

they made some great songs...but they are washed up now...hagar, roth, van halen brothers, etc.

and that extreme lead singer?  is no where to be found!