Are there choices in Refillable Mugs?

In the past, my have been mugs w/ handles. Once I got the special 25th anniversary one but still a mug.

My friend just come back from POP, she says you can get it w/o the handle (like for your car cup holder). She didn't get one since she only went for entended weekend.

Is that a special one? Is it part of the free refills?

If so, which is better? I won't have a car so I don't need for that. We plan on fill up and headed to bus w/ kids and stroller (w/no cup holders).

Which spills less?
Which holds more?
Which is easier when have to hold alot?

Anyone have a pic to compare. Thanks.