Product review (3 stars): Unreliable Pfaff, unreliable Singer.
Little unhappy with. Bought in Oct.  2015. Left it set from Dec 2015 through April 2016 while on vacation.  Used it a week when I got home, the darn thing broke. It is in the shop now and will have an $80.00 service fee.  This is pretty sad for a machine supposed to be such a reliable machine. From cost standpoint, I am very very unhappy.  I followed instructions using only the expensive threat it requires. Meaning I gave away at least $200.00 worth of thread, while buying at least $250. in thread this machine uses.  I will further state that I had an old Kenmore sewing machine, bought in 1974, repaired twice, in 2015, At which point it had worn completely out. It had been guaranteed<a data-hook="product-link-linked" class="a-link-normal" href="/Pfaff-Smarter-C-1100-Pro-Professional-Sewing-Machine/dp/B013CV0GZW/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Pfaff Smarter C-1100 Pro Professional Sewing Machine</a>&nbsp;for 25 years .This machine of yours should have been able to last more than 6 months it has been in my possession. In 2015 I bought a Singer Sewing machine, Heavy Duty. This company is also owned by Pfaff which I did not know at the time I bought it.  SAD RECORD FOR YOUR MACHINES.  I later found out that this machine had set on a shelf for 4 years, but the company hastened to inform me that it was still "new". Well Not Hardly.