I don't know much about Canon flatbeds but for Epson, I have a v550.
First off, a lot about scanning is Software and Workflow. The learning curve is steep. I've got OK results but am no master of it.
In Epson Scan first off I hit autoexposure, which gets the color roughly there. Afterwards it's time to put black and white points in the histogram (leaving some headroom). By then, the image may be flat but decent in colour. Epson Scan I find gets cool/cyan scans out of Color Negative (Portra).
Scanning as TIFF (you want to manipulate that), afterwards it's time to load into LR. I use RawTherapee, which is free software and does about the same. There goes the fine tuning of exposure-Curves-Levels, contrast and color correction (WB) & Sharpening. Exporting the final file to a Jpeg.
I may recommend the very helpful guide written by Colton Allen. Google it around the forum and there should be a link.