When your Giros were new, could you feel the pedals? I think 2 years out of a pair of shoes with 10,000 miles on them is incredible. The only way you're going to get more cycling mileage out of a shoe is by going clipless, but you miss the versatility of being able to walk around in them.
I use a pair of Specialized 2FO Roost shoes and they are great (for me). They allow me to ride and work in the same shoe, and they don't look like sneakers. They do look more like a skate shoe, but are understated and have no logos, so they don't draw any attention.
If your Giro shoes fit you and you like them, just get another pair, you're probably not going to find anything better.