Strongly suggest you get yourself to one of the larger quilt shows that typically have at least 5 or 6 of the large quilting machine companies with booths. Of the larger companies ... HQ, Baby Lock, APQS, Innova and a few others have both long arm's and sit down models. Try them all.
I tried 3 of the sit-down's and liked them, as well as all of the long arms. In the end, like Dunster & Feline Fanatic ... I LOATHE basting and opted for a long arm. I also don't have the space at home for a long arm, so I compromised and set the long arm up at our business location (7 miles away). I'm not able to quilt as often as I like, but I didn't buy one to quilt constantly as a professional, I got it only for me.