design is very important to me also.
the airforce is an ugly beast IMO.
first, I would go for an improved cartridge on your existing beautiful TT
any cartridge you buy can be used on any future table you buy.
your phono pre is extremely versatile, ready for any MC you might try. manufacturer will help you make the correct settings.
For my 1st MC Cartridge I chose AT33PTG/II.
Very wide separation, and very tight channel balance gives excellent imaging. I just bought another. I like it so much, I guessed my stylus should be worn, I sent it to AT, they agreed, just ready for discard. AT has a program, clean return for $40., or they sold me a new one for $262, less than half price.
I suspect you will fall in love with your existing TT again right away.