I didn't include ALL of the tensei's I've seen, just the pretty good ones that aren't overly obsessed with harem/eechi.
decided to leave it at 199 mangas so i can edit reviews as i please; a lot of these are very mid- in my experience, the avg rating votes on the mangas are usually good indicators of the quality
9.5+ = masterpieces 9.4-9.1 = good mangas 9.0-8.8 = mangas to read if you're bored 8.7- = bad