I have a Tiara 1 which I bought new in late 2012. My husband had to time it when I forgot to tighten the needle and it fell out jamming the machine. My tension is rarely a problem and easy to adjust. I wind my own bobbins with the included external bobbin winder. I use all kinds of thread including variegated serger threads and Gutterman MARA 100. I bought both extensions and just recently added the ankle for easily changing presser feet. I free motion and use quilting rulers. I have MS and could never complete quilts if I had to stand at a long-arm- and wouldn't have room for one anyway. I absolutely love my Tiara and anticipate many more years of enjoyable quilting with it,. I have never had it upgraded and feel no need to do so. If it's not broken, I am not going to fix (change) it!