Both MAME4Droid and Tiger are good, user wise I think you made your own mind up there though

I would like to say Tiger over all is the better of the two

R-Type 1 2 and Leo (Not so sure about Leo working)
1941
1942
1943: The Battle of Midway
1943 Kai: Midway Kaisen
Raiden

I will look through them more later