My favorite big and heavy is my Buck/TOPS csar-t. Just an awesome folding prybar that cuts(not a big fan of tops by the way) my thin lightweight is a kershaw scamp (great value at 20$) ive been contemplating shellin out 250$ for the limited edition spyderco ti military with the hand fluted scales. (i have an obsesion with titanium that is greatly increased when its anodized)