What size/weight/dimensions are you looking for, and what do you plan to do with the knife? My husband adores his 0452CF, but that's a 4" blade and lol feels like your flicking out a sword when you press that tab. [emoji14]
I'm a big fan of ZT's, with the 0456 being my latest acquisition. For someone just starting out though, depending on hand size and what you want/need, I'd go with either the 0562 mentioned above if your hands are larger (or you just like beefier knives), or the 0450 if you have smaller/medium hands (or are looking for a "gentleman's" type folder that is light and easily concealed). Both are excellent flippers with great construction, but it all depends on what you are looking for. ZT has a knife for everyone and, because they generally don't embellish much from the factory, you're free to make them "yours" by customizing anodizing, clips etc.