I'm looking for some advice on can openers. I had a manual one for 5-6 years that was great. The blade started to rust so I bought a kitchenaid that was horrible. I'm now using an even worse one from the local supermarket until I decide on the next. Henkels makes one that is highly rated but is $25! am i just being cheap or is that really worth it for a manual can opener? any suggestions would be helpful.