You didn't say what kind of quilting? Freehand, computer guided, both are cool but have different skill sets. There is a place for both. I am in the Statler Stitcher camp for the computer guided, we just had ours for couple weeks but it is a blast. The A1 we have had a few years.
Space is a big factor as well (table length) ours both have 14' tables then two or three feet on all sides uses up a bunch of space.
The throat space is a factor. If only doing freehand a 30" isn't needed but on a computer guided it is nice to have that extra space.
There are some youtube videos on different brands to see some of the features and options before you go check them out in person.
One more thing if you decide to go computer guided some (customers) think you just push a go button and the quilt is done. I wish it were that easy. LOL It takes lots a time to set it up, but worth every minute.