Digital BW, The Print

I am thinking of replacing my HP S20 film scanner with a Acer Scanwit 2720.
I don't use 35mm for any serious images. I use it more like a sketchbook
before I go and shoot 4x5. The HP S20 has been fine but doesn't seem all
that sharp and most scans seem to be more grainy than I think they should.

I appreciate any and all comments about the scanwit.

TIA

Scott