Dave,
I'm with you. Staining is a far better long term solution over glazing. Staining cabinets though is very difficult and requires a cabinet maker, not a painter/finisher IMO. I tried having a GC who claimed he could successfully stain my cabinets stain them and it turned out to be a $1,500 waste of money.
I had to get a professional cabinet maker to come in, replace all the doors, re-veneer the boxes and stain them. Now it looks fantastic, but it cost me $7,000 on top of the $1,500 I threw out.
Greg, before you do anything, get samples and make sure you and your wife are 100% satisfied before anyone starts. Staining will be a lot more work than the faux finishing. Each cabinet must be taken off, sanded down and then stained.
Fauxing will look nice too, but not last as long. I live in S. Florida and due to hurricane codes, have to have metal front doors. My finisher fauxed my metal white doors to look like wood. Sure a woodpecker would probably be fooled from a few feet away, but once I lightly brushed my keys up against the door when leaving the house and the finished scratched. Luckily I had some glaze and was able to cover it up, but as Dave said, staining is definitely the way to go if it can be done....
While you want your Sigs, I think your house would look a lot nicer with darker cabinets. Those light cabinets just don't do it for me... But we are all different, and ultimately, you must decide what you like...