Adam,
I usually buy three bottles of whatever I want to try. I drink one right away (after it rests for two weeks), then I keep the other two for.... however long that is. I've found that sometimes I'll try a bottle and not like it, to only like it later. So, each bin will have two of the same bottles in it. I do not stack double deep if I only have one of that particular bottle. I've got around 450 bottles so far, so I have plenty of room to not need to hide them. But as my collection grows, I'll have to come up with a numbering system for the bins. I use Personal Wine Curator V3 for my inventory software. It has provisions for locations. I've found this software to be very handy. I thought about using tags, but they come with their own aggravations.
I'm the reverse.
I use the bottle tags and have yet to commit to the software. The bottle tags make it uber easy to locate what you want by eye. I just did a typical sorting by continent or country first (i have the cellar sections labeled at the top with concrete/stone headers hanging from the ceiling) and then i sort alphabetically by the brand name.
If one section gets too full i have to pull and resort some bottles now and again, but that is when having enough capacity makes the shuffling easy.
