Photographing with close up filters

So I bought a 15 dollar set of close up lenses for my Canon DSLR camera this week. At first I was pretty disappointing because I couldn't figure out how to screw them on to my camera. Of course I was doing it backwards and I felt pretty dumb. Obviously I'm not the most camera savvy person, but I've had a lot of experimenting with this camera, and I can at least take some decent bead pictures.

I'd love the have a macro lens, but those are a wee bit pricey for me, so I went with these close up lenses. I read that with these lenses you do sacrifice sharpness a little, so on to experimenting.

I took a ton of pictures to show the results with the various lenses. Each picture was taken in a light box with a tripod and given a 2 second timer (for my wobbly button mashing fingers). I had it set on f20 so each time the camera took a picture, the lens was open for about .6 seconds. I'll let you all be the judge of which one is the best.

Here is +1
Here is +2


Here is +4
Here is Macro

Here is Macro with the +1 screwed on top of that one

I'm still not quite sure which one I'm going to end up using. I think it would look different with sets of beads, so I'm sure I'll try that, but for those of you with focals I hope this experiment is helpful.