Do you hear motor noise through the speakers, or from the table?
If from the table, and it's the arm motor, there's not a whole lot you can do about this besides make sure it's well lubricated and the belt is correct. Cheap linear trackers tend to make noise from the arm motor.
If it's through the speakers, and what you're hearing is rumble from the platter, it could mean your bearing needs service, or it could also mean you're at the limits of what they player can do.
So far as linear trackers go, a higher end one like a Pioneer PL-L1000, or a Yamaha PX-3 will sound better than many of the Technics models (especially the close and play models), and does a smoother job of moving the arm. The linear motor in my Pioneer PL-L800 is always dead silent, and it performs flawlessly. The belt in a Yamaha is kind of trouble prone, but also works great.
The thing about linear players is while they all basically do the same thing, there's different ways to do it, and some work better than others. The cheap ones have shortcomings, and you can't really tell how good they are with specs alone.
By specs alone, the Technics SL-3 I have should be a very good sounding record player - but it just isn't, it sounds terrible and cheap. I don't really even know why it's so bad, but it is.