ANY knife is a good knife! I love knives and kind of collect them.Depending on what size you have I assume it's probably a 5" or 7", it doesn't really lend itself to cutting things like large squash, or even large potatoes.If you have a 5", it's perfect for PEPPERS, green onions, mushrooms, etc., smaller veggies. The 7" will obviously be better for larger veggies, cutting up a chicken etc. If you have a hollowed blade (like scalloped),they say it releases food better. ??? Maybe, maybe not. I think it depends on the food.When it comes to sharpening, keeping them sharp, or staying sharp, their are a lot more factors than the name Santoku.Use (cutting style), cutting surfaces, maintenance, storage, and food itself.Santoku is a description, not a brand, so just because it's called Santoku, doesn't mean it will be a better knife (stay sharper longer).The single most important factor with any knife is the steel quality. When it comes to good knives, there is generally a correlation between cost and quality. Although I have some cheap knives that I ask how did they do that for so cheap?So that's not always literal. But when you can buy a Santoku for $20. or one for $120., I guarantee the $120 will be better, hold it's edge longer etc.I think the worst thing for a knife edge, and I do it all the time, is scraping the chopped food to the corner of the cutting board, ugh! It's a habit I can't seem to break, so I have to sharpen my knives quite often because of that, oh well.I personally like the laminated steel knives. Some have just a few layers, and some have up to 20 layers, and I think all are a better quality than most stainless varieties, plus they're beautiful.If you really want a masterful tomato cutting experience, go with a ceramic Santoku or Kyocera Kyotop Damascus. It's the sharpest edge achieved by humans thus far, but only to be use for certain vegetables IMO. (like not pineapple, butternut squash etc.)You'll pay dearly for it though as they start at $200 and can go up to what ever you want to spend, if you're rich! But would you really WANT a brand new Cadillac if it only cost $10,000? I wouldn't....Sorry, I kind of jacked your thread! I could go on all day about knives (obviously).Join me next week when I talk all about "Sharpening"! LOL!