your first consideration when looking for a machine should be budget.
once you have decided how much you can spend your options will narrow.
i have been very happy with my Brother machine.
it's a high end so cost a small fortune.
however there are machines out there that will fit into most budgets.
Babylock is also worthy of recommendation.
i'm sure others will tell you if they are happy with different brands they use.
make sure to choose a brand for which you can find certified
local service and repair.