phrase match, broad match and exact match on seperate ad groups

Is it recommended to seperate the three levels of match type onto 3 different ad groups? or is it best just to put it in a single adgroup with the same keyword and different match types?

 

Most people do the latter.

 

any cons with doing the former?

 

Be very careful about broad match. A broad match for "Blue Widgets" may come up on searches for "Pink Widgets", "Cheap Widgets" or "Blue Moon".

I've started using very few broad match expressions to prevent clicks for expressions that don't match what I've got. I'm doing largely Phrase and Exact matching.

For those ad groups where I do still use broad matching I'm also using negative matching for expressions that get me lots of clicks but no conversion.

 

Google takes a lot of liberties with its broad match, which is why I almost never use it, but rely on a bazillion phrase/exact matches instead.

 

I know this isn't exactly what the OP asked, but it is good info for anyone who wants to understand the differences between the matching options:

Can I get your opinion on "" -vs- []

 

i just use phrase and exact in the sam ad group