The most important thing, after the features that you are looking for, is the dealer and their reputation. Some dealer's just sell you the machine and send you out the door! You want a group with classes on various features, an in-house repair person ... someone you will be comfortable in going to with problems. I have worked for our local Viking dealer for years and have heard horrible stories of mistreatment at other shops. The warranty issue is another problem - if you buy on-line you may be buying a stolen machine and you probably won't get your warranty work for free in any case.