@@STUFFWEDO The most practical one for me is the Kershaw 1730SS, an all stainless steel knife which is 18cm long and weighs only 92g. I carry it when I go out at night. As for the AK47 knifes series, now that I've got 2 smaller ones it's tempting to have the biggest one too. So today I ordered the 34cm AK47 from a local on-line store. Would you believe it costs just $7.50, shipping already included!