Don't understand what you meens

Do you want to know how I found/bought them
or
how I use them ?
For now, I only use the Myide as an image-loader.
Just work like a charme but the non-ability to use your name for an image was a big unpleasant think
But, this bad thing is already corrected
(
http://www.mr-atari.com/hardware-3rd.htm )
For the sio2ide, the very good thing 'bout it is that it work almost like sio2pc but without the PC, only the hard-disk!!!
You can format the hard-disk on the PC, put all the ATR image you have
(got a lot...
http://www.redraven.perso.cegetel.net/ )
(or here
http://the-redraven-site.chez.tiscali.fr/ ) and voila, the hard-disk is ready to be put into the ATARI and in use imediatly.
Hope that will be as easy as it seems
Hope that help