I’ve found Epson to be the most durable in a lab environment, and they produce excellent results. Scanners that are good at ripping through text documents quickly do not necessarily do very good at all with photos. Good photo scanners require the ability to maintain detail in shadow areas. The D-Max (dynamic range) value indicates how well they do at that. The rating goes from 0 to 4. 4 would be considered perfect. Unfortunately, most scanners have a very poor DMax and the vendors do not publicize the number.
Second to DMax value, consider optical resolution. Some scanners boast a very high resolution, but it may be obtained through software interpolation, not actual image information captured. An optical resolution of at least 2400×2400 ppi would be good.
Finally, avoid scanning to jpeg. Jpegs compress image info with a lossy algorithm. That is, file size is made smaller by sacrificing image quality. Save to lossless TIFF, PDF or PSD. You can then compress by saving as Jpeg later if needed.