Well I tried out the egg pump and it's worked great! So far I'm 3 for 3. And it was pretty quick and easy to use.
In my limited (but no doubt scientific) experiments I've found out that room temp eggs are much easier to empty than cold ones.
I've also found that putting eggs down the drain will clog the kitchen sink but that's another story for another day. (What does one do with the insides of eggs anyway... if you're not planning on cooking them that is.)
I stayed away from any eggs that had gray areas on the shell- the teacher in my pysanky workshop said that was an indication of a weak egg.
Look at that- just one hole and the egg is empty- that's my favorite part about this egg pump.
Hubby (the real scientific mind in the house) thought I should try one for "testing" purposes but the idea of blown up egg rather than blown out egg really wasn't appealing so I'm willing to take the instructor's word for it.
I don't know what I'm going to do with the eggshells yet- maybe some "testing" of different crafty ideas is in store for the week.
Oh and if you're interested in getting this egg pump you can get it here. (It's not a paid link or anything, just a good source for materials that was recommended to me by the pysanky workshop instructor.)