Reply to Denon MC6000 + Midifighter Classic?

Hi everyone, I own a denon Mc6000 for almost 10 months now and I am very glad with this controller. I create my own mappings now and know how to beatmatch exactly in time. However I use a Dell computer with i5 processor. I have many troubles with the effects unit or samples when I use the computers sound card. You can hear some strange noises when I change the effects. There are also some problems with the (hot)cues when i use sync. The track always starts before or after the cue point, never on the cue point.

I will buy a new computer (macbook pro) soon after I finish my final exams. Normally, there will be no more serious bugs with a Mac. Does anyone have already some experience with it?

When the bug-problems are fixed, I was believeing to upgrade my setup with buying a Midi fighter Classic. Do you believe it's worth to get a classic with the Mc6000?

Greetings from Belgium