I understand the concerns of everyone else and it does have some merit. It would depend on how well you "know" your husband's taste. Speakers are very subjective. If you and him have gone before and have auditioned some speakers and have come to the same conclusion as per taste then you might be okay.
But then again, It might be safer to just have a nice card that says "IOU one pair of speakers"..
you can make it a scavenger hunt and have it end at your current speakers and have the card located behind the grills.. lol (just an idea..) ( I have done that with my wife.. minus the speaker part lol )
As for me and my wife, we were very close in taste but there were some differences. If she were to have bought the speakers without me having been there I am not sure we would have come to the same speaker conclusion. We bought checked them out and talked about each speaker we listened to (likes and dislikes).
Being that you have included SVS in your list, you might want to email them and ask them if their speakers would be considered an upgrade or not from the M20s that you currently have. They are a great and honest company. They will tell you if your M20s would be considered "higher/better/etc" then the ones you are considering.
I do applaud your efforts in researching all of this. Whether you buy them yourself or with him, the research you are doing will come in handy and will really show him that you care.
