Owner of a husqvarna viking Designer 1, Pfaff Select 3 and Janome 6600P...all have great qualities....but for quilting would have to go with the Janome, followed by Pfaff, then Husqvarna..
Have had the Janome a month now and there have been somethings I have had to get used to....thread constantly coming out of the needle...rectified by holding thread at back...for small piecing it really is happy with the start/stop mode not using the foot pedal.....didn't think the walking foot was as good as the Pfaffs IDT to begin with but am beginning to rethink that now as I get more used to the machine...
My advice when looking for a machine is write down your must have features, followed by your would love to have features, and take them into a dealer....don't come away with anything that isn't on your must have list otherwise you will be dissappointed and take fabric and batting... try as many machines as you can. If you only try them with a scrap of fabric they will feel totally different when you have the batting etc under the needle.
Also if you have a good dealer buying second hand can be a great way to get a wonderful machine at a knock down price....Good Luck.