I am looking to buy my first MD and I went to the hobby place were they sell Whites, Minelabs, and a couple others. The guy there told me they don't even sell Garrett anymore because people were so unhappy with them. He said the Whites were ok but, he recommended the Minelab units. Even the cheap one he said would be better then any comparable unit. But anyway this was the first time I had ever seen the Quattro. He said the same thing. Its essentially a dumbed down SE and quite a bit cheaper. I read the posts on here about them and it seems like some people have problems with them. I imagine that being familiar with another detector may have something to do with that. But what exactly is the diffrence from the SE? They are slower? Do they go just as deep?