You know where you place your pages near the edges of the scanner glass (like I always do) but the finished scan ALWAYS cut out between the edge of the glass and where the document line you're supposed to scan at, resulting in I think maybe a 2-3 cm loss of the page? You could place your page at those lines where you're supposed to be at, but you'll spend more time trying to straighten the page, and you'll wind up having skewed and misaligned pages MORE than just auto-straighten by placing it near the glass edge albeit losing part of those pages. Frustrating, huh?

ADFs are even worse unless you can somehow align the doujin/tank pages minus the spine holes, same thing with portable scanners. Hi-def camera scanners....dunno how good those are (I still remember buying a cheap one on Amazon, and plugging up the USB actually fried ALL my back USB ports to the point my PC became useless). So, tl;dr, is there ANY flatbed capable of scanning straight and/or not lose those 2-3cm of pages when scanned near the glass edge?