I've really soured on literary flashbacks. Not only does a flashback stall a story's natural progress, not only are too many flashbacks set in harder-to-read italics, but I find the fidelity of first-person flashbacks largely implausible. Whose memory isn't gilded or eroded by time? Who remembers long conversations word-for-word years later?
I can accept a perfect flashback in third person-limited or third-omniscient. That is, an unbiased account of exactly what happened.