My opinion, For what ever its worth to you If I could only have 5 knifes I would have [one or the other] A 9'' MAC chefs's knife [stainless steel with a European style handle] Or if your place of work understands and accepts the nomenclature of carbon steel, I would choose a K Sabatier Au Carbone 9" chefs knife [you can have the factory engrave your name on the P.O.M handle scales and or a cool logo. Next I would have a stainless steel paring knife, Buy the 3" Wusstof that comes with a nice pare of kitchen shears [that come apart so you can clean them] I'ts a great deal at about 25 Bucks! Also the wusstof 3" parer was voted fav by America's test kitchen for what it's worth. =]
Then my third Knife would be a VERY flexible 4 star elephant Sabatier from The Best Things.com [In carbon steel] awesome for boning or filleting a fish. My fourth knife would have to be the MAC 10" professional serrated bread knife, it is unique in that it is re-sharp-enable and cuts like there is no tomorrow, the serrations are a bit wide and spaced apart for cake,BUT because it is so crazy sharp it WILL trim and torte a cake, this knife also utilizes a off set handle so your fists miss the cutting board. And lastly my 5th knife would be a Carbon steel butchers slicing knife [like a scimitar or catuse or French or bullnose],,,this is for breaking down and slicing large cuts of protein or breaking down and custom fabricating a animal. [my personal knife is a 12" Vertible Bresswick Chef Au Ritz Bullnose butcher-slicer {carbon steel probaly made in late 40s or 50s in Paris]
my wild card would be at number six....lol a,, Havalon surgical scalpel This is because I do a lot of butchering of wild game and domesticated Hogs, and this does very well at eviscerating and skinning [you can also buy mini bone saw blades that fit in to the handle for bone, This knife is food safe because it is sanitary by nature. [this would also in my mind defeat the need for a petty-utility blade especially if you have a pare of good clean-able kitchen shears as mentioned above] [it folds AND its easy to clean] so you can have it on your person if you wish.