What do you mean by “get”? I have an Epson V700. I have done plenty of side by side comparisons. The sharpness of the grain in the scan is what matters, not merely “getting” the grain. To speak of the resolution of a film exposure is incoherent. Grain != pixels. The V700 is also inconsistent because of the floppy plastic mounts and because they lack a mechanism to really keep the film flat.

I have an Epson V800 and a Flextight, the output is much better on the flex tight. There's more to it than just the manufacturer's DPI flex.

Because Epson scanners don't actually resolve the grain. Low resolution scans tend to exaggerate grain... which can make you think you're resolving the grain.

Also, photos aren't only about resolution and sharpness. Colour and tone reproduction is also important. And consumer scanners are acceptable, but nowhere near as good as drum scanners. Even minilab scanners (Fuji Frontier, Noritsu) are no match for drum scanners.