I have: Bernina 440EQ
Janome 6600
Brothers Pc 420
Janome 760 Gem
Brothers cs6000i
Singer Fw 221-1
Singer 401a
Singer 403a
Singer 99-k
Singer 66 (1932 hand crank)
Singer 66 (1917)
Singer 15
Brother window matic
Husquarna Viking 6440
3 or 4 Kenmores from 1950-1970
I love them all but I use the Janome 6600 because of the large harp area for quilting and all the others for piecing and decorative stitching.
I am sure you are on overload with this info. Just take a breath and think just about what you want your machine to do and what you haven't done that would be interesting in trying and put a list together. Then visit the shops and test drive everything before making up your mind. Have fun trying them all.