Besides scanning, you could also actually print some negatives. Scanning negatives may give quite a different result - not always better or worse, just different. I'd rather evaluate a negative by prints than by scanned images.
I use Silverfast scanning software. The "colour point of view" can greatly be influenced by the selected film type in the software. Sometimes a "wrong" film type setting may give nice results.
BTW: monitor & printer callibration is also a factor.