I have this model too and love it. I tend to sew a lot without stopping to clean out the bobbin area as often as it needs it, and if it gets too linty I sometimes have tension problems. But under normal conditions (clean) it can't be beat. I bought mine from Ed Reichert in Phoenix and he gave me a great price and free shipping!
By the way, it is not "an industrial machine". Commercial machines are mounted in special tables, have large oil reservoirs and a large, noisy, seperate motor mounted on the table. A lot of people selling machines like to make the claim that it is an industrial machine when it isn't. The Juki is a portable... not industrial... but yes, a very, very strong machine that will sew through anything without wavering.