The short version
The Victorinox Fibrox Pro 8-inch is the answer to this question in almost every thread, and has been since before Reddit existed. It weighs about 6 ounces, comes sharp, and the rubbery Fibrox handle stays grippy with wet hands. The steel is soft by Japanese-knife standards, which is why cooks love it: a $10 pull-through sharpener or a few passes on a cheap whetstone brings the edge back in a minute.
Culinary schools hand these out. Test kitchens name it the budget pick year after year. There's nothing exciting about it, and that's the recommendation.
The complaint about the winner
Two, both real. First, the soft steel dulls faster than a $100+ knife, so you'll sharpen more often. Second, the older Fibrox handle shape and the lack of a bolster bother some people who use a pinch grip; the blade sits close to your fingers. Newer Fibrox Pro models have improved the handle, but if you have large hands, hold one before you commit. Also: it's ugly. Nobody buys it for looks.
If $45 is too much
The Mercer Culinary Millennia 8-inch is around $20 and is the other culinary-school knife. Same basic shape, textured Santoprene handle, sharp out of the box. The trade is steel quality; one r/chefknives reviewer described the Millennia's steel as "soft, gummy, and very difficult to refine" on stones. For a home cook who sharpens with a pull-through, you won't notice. For anyone who's picky about edges, spend the extra $25.
Why not the others
- Mercer Renaissance 8-inch (around $45 to $50): the strongest dissent in these threads. Forged blade, POM handle, full bolster, roughly the same price as the Victorinox. It's heavier and some people prefer it. Either is a good choice; the Victorinox wins on weight and the size of the consensus.
- Tojiro DP 8-inch (around $80): harder Japanese steel that holds an edge far longer. Also chips if you twist it in a squash, needs a whetstone not a pull-through, and is over budget.
- Imarku, Paudin, and other Amazon-brand "Damascus" knives (around $30 to $60): the pattern is printed or etched, the steel is inconsistent, and the reviews are padded. Skip.
- Any block set under $100: you get eight mediocre knives when you need one good one and a pair of shears.
Which one for you
Almost everyone: Victorinox Fibrox Pro 8-inch. Truly tight budget, or a first apartment: Mercer Millennia. Want something heavier and don't mind the weight: Mercer Renaissance.