Janome 15000
If you had to do it over again - would you? Absolutely -so many bells and whistles I would have never imagined.
Has it been reliable? Yes -I've had it over a year it has been great.
Has it been picky about threads? No - I use many, many different kinds and have no issues.
Have you had it in for repairs and/or adjustments more than a couple of times? No
Would you still keep back-up machines? Yes I have one for classes
I recently used it to quilt a king size quilt with the embroidery unit. Here is the quilt: http://www.quiltingboard.com/pictures-f5/rainbow-fan-t264738.html
and here is a picture close up of the embroidery [ATTACH=CONFIG]522688[/ATTACH]