Subdued hops flavor and aroma mostly on the more recent one a couple years ago. An IPA I was racking to the keg and turned my back on, then had to restart the auto siphon... Cardboard flavor but very mild.
I have had the sherry like quality in much older bottled beers. I have a belgian dark strong that's about 5 years old now and starting to exhibit a sherry like flavor. Likely oxidation but it's pretty high abv so you don't mind it so much after a pint. Adds to the character of the beer. Not so much in other styles so luckily I've learned since then.
I seldom bottle directly from the fermenter now. Mostly closed transfer to a keg then bottle from there if I want to save something. Much better results long term. A doppelbock I bottled off the keg 3 years ago is at it's peak right now.
Oxidation matters and will rear it's ugly head. You may avoid it's worst affects through quick comsumption or heavy carbonation in kegged beers but some palates will recognize it very early on in bottled beers.