Results of PNG compression tools

I've repeated Oleg Kikin's PNG compression tools test with the following competitors:

• Adobe Photoshop CS4
• AdvanceCOMP 1.15
• OptiPNG 0.6.3
• PNGCrush 1.7.6
• PNGOut r20091108

I've made two tests. First, with a sprite image (26 x 2532 pixels) with 70 icons in it (used in real life in one of my previous project) and second, with a set of those 70 icons in separated files.

Data:uri and MHTML

Do you think that these will ever replace the static content downloads?

I think, yes! But we will need better tools for deployment. In the next few days I'll make some tests about how the data:uri and mhtml solution will save us bandwidth or how it will increse the loadtime.

Do you use these methods?