I used both with DS, But once he started getting confident with the potty he decided he could stand up over the potty and try to aim. It got pretty messy as I don't think he got it all in at all. So I took the potty of him and he now uses the toilet.

Oh yeah watch out for mop buckets, cups, frisbies(yes I said frisbies) and other item down low that "resemble" a potty. DS peed in absolutly everything he could find, would even move whatever he wanted to pee in right next to the potty/toilet to pee in them. GROSS.
Good luck with the tt, when you decide it is time.

Ellie