My turn....
Can you tell that basically we ALL love OUR machines regardless of what they are....
I have owned a Pfaff 7570 (older machine) a Viking Sapphire (fairly new machine), a Viking Designer SE (a little older than the Sapphires), and a Singer (very old 1950s model and made of iron).
I now have only one machine and it is a Bernina 450 that has the 9 mm stitch width.
I sold every other machine I had after getting the Bernina. Each of the other machines were absolutely "wonderful" machines, and they all had features and things that I loved. For me, it came down to which machine I actually went back to use over and over again. Because I had the advantage of having several, it was interesting that in my mind I always had a reason on why I sewed on the Bernina. After a while, it seemed silly to have all of these perfectly good machines just sitting idle and not being loved so I found them all good homes where they would be used and loved.
My advice is to not rush yourself if you can at all help it. In fact, I would take my own fabric in and sew and sew and sew on each machine that I was serious about. If any dealer gives you grief, write that dealer off the list and find another. Believe me I am positive that my dealer thought I was never going to make a decision. It took me several months.
My machine is perfect for me and I wish you an enjoyable experience in bonding with whatever machine ends up choosing you!
JoJo