AVH-P4100DVD

lookin to see what u guys think.
its between this, any 7" alpine,
or maybe even a kenwood...

just wanna see what u guys think of it, if anyone used it, how they like it/dont and such.
and if its a good buy, or not. like should i be looking at something else?
kinda wanna keep it in those three brand names. but am open to other opinions as well!