I have a standard flatbed scanner (Epson Perfection V550 Photo) which I use for the preponderance of my scans, and an overhead camera (CZUR Shine) that I use for refractors and other reflective cards. I use an old version of PhotoShop to create composite images of the scans. I do not retouch the cards themselves on the scans; but, I will simulate shadows and remove anything that distracts from the cards. It's been a while since I picked up my flatbed scanner, so I presume Epson and others are making better scanners today. I'm not using PowerPoint currently; but, that's a useful application to build slides. I simply use the Windows "Photos" app to walk through my images.