If money is no object, I wouldn't hesitate and go with the IC-7600.
This is the radio I would like to upgrade to one day soon. I love the color LCD screen of my IC-7000 and the 7600 radio reminds me of a larger but better version of it with far more display options.
The new firmware update which may already be installed on the new radio's now purchased has an upgraded version of the band-scope which has a waterfall display which is the current trend and is superior to just looking at radio waves on a scope.
Also if you're looking into dabbling into digital modes, the 7600 is ready to go without a computer interface, just a keyboard is necessary.
The 7410 only comes with a single 15 KHz IF filter which isn't very useful for nearby QRM, but you can purchase and install a 6 and 3 KHz IF filter. The 7600 comes with all 3 filters installed.
I know people can go into finite detail aspects between both radio's and yes the 7600 is quite a bit more expensive, but in a blindfold test would there be that much difference in the receiver?
The 7410 would make a nice base radio especially with the extra filters and it's good for the price, but when I had a chance to compare in person side by side on radio's in this price range, I preferred the Kenwood TS590.