V.W.
I bought a Husquvarna Viking Emerald just last year. I haven't used it a whole lot, but when I was shopping everything I read and heard said it was good quality. And good quality machines are $$$$$. I got a deal on mine at JoAnn's for $299. The machine is typically in the over $400 range. It does pretty much everything, except it is not digital (which to me, is not a bad thing).
It is SO easy to thread and fill bobbins. I have used it a few times, and am gearing up to do a lot with in the coming weeks. I viewed it as an investment. I heard from some friends, that some of the ones you can buy at Walmart/Target (the cheaper Singer/brother ones) can break easily, and then you spend the $ in repairs. I preferred to just spend it on a better machine.
BUT, I am new to this, so maybe my info. wasn't spot on. Most of my info, however, came from a good friend who is a big-time sewer (she quilts with her mom/aunts/etc on a week retreat once a year) and is constantly doing projects. She has an older machine that she prefers, but it was taking a while to get repairs done (we live in a small town, and was having a hard time finding a repair person) so she bought a cheaper machine to get her through. And she was having problems with that pretty quick.