I've had tons of knives over the years, but up until recently I didn't have any that I particularly liked and wanted to keep in great shape. I've heard that you should coat a knife with oil, or lubricant, etc. periodically...to prevent rust. What exactly should I use? How often? And does it differ with the various metal types? <br><br>Also, what type of resonably priced sharpener do you all recommend? Anything in the $20-$40 range would be great. <br><br>Thanks!<br><br>-John McIntire