I have the babylock Evolution with air threading and coverstitch. I have to say it is solid, does wonderful stitches, whenever there is a problem it is user error. There is a pretty steep learning curve but this machine is a good one. The main drawback is the price. I did a lot of calling around, comparison shopping etc. and paid $2000 for mine (18 months ago) but the prices I see right now are close to double that. To be honest, I don't use it enough to justify what I paid for it let alone what it costs now. So, if money is no object I think the Evolution or the Evolve stand alone. Otherwise I would look for some of the other models suggested. I've heard, though I have no experience, that Brother is a good choice.