Do you like gaps in between songs in albums?

For those of you that listen to albums, I need some input. I am building up quite a big folder of random electronic tracks I make when I am bored, and I am thinking I might eventually make them into an album… Anyway, because of this, I am wondering, what kind of transitions do you like in albums? Obviously, I can’t do the “Sgt. Pepper” thing and make the songs perfectly fade into each other because they weren’t supposed to be tracks in an album in the first place, but I am seeing 3 main choices:

1. No fade in at all, songs go one track after the other without any gap whatsoever.

2. A small (how long?) gap in between each song.

3. A fade in/out on each song

Any other ideas would be welcome, but I would really just like to know which you prefer. Thanks in advance! :D