I do not have experience with this machine but after looking at some of the YouTube videos I would say it probably is what it is lined up to be. I love my Janome machines. I have both a serger and a regular machine. My regular machine I purchased back in the 80's and it cost more than this machine. The HD3000 is a nice basic machine and it should provide you years of sewing. The only thing however is you may want a machine that has a longer throat for machine quilting. You would be able to do a full size quilt with a bit of a struggle and I have done many many on this size machine but I do love the Brother 1500se that has the longer 9" throat. It is much better for quilting and only has a single straight stitch.
If you are going to be using the Janome for both garment and quilting this may be your better bet. If only using it for quilting you may want to consider something else.