My Viking is much older than the one you are looking at (20 years) so I can't help you with an opinion on the model, just the brand. Mine is as solid and reliable as anything I have ever owned. I can only offer you a source of machine reviews written by real people who use them. Have you read the reviews at Pattern Review?
http://sewing.patternreview.com/SewingMachine/Viking/ Best of luck to you.