I would like to get the 30SF. I have 20SF and 21SF after comparing with the 20 and 21. SF versions much more comfortable in my hand. So I'm thinking the 30SF is the way to go but I've read here about some serious reliability issues with the 30SF. Can anybody comment on first hand knowledge of issues with the 30SF? I've seen a lot of very positive posts on the 30. Help me understand the issues with the 30SF (if there really are a lot of issues!) TIA!!