been using phendrix for a while now
are there any other alternatives?
is midas good & stable?
I think the author has abandon it
its at version 8

but looking at the older ones & i see

http://skyrim.nexusmods.com/download/20499 40,089 unique downloads 65,976 downloads 2,887kb size Vendor Version of 0.07
is this good & stable?

I assume I could use that one & buy ever spell from the vendor?

I did a quick search, I haven't used all of these, so if any are old/broken/just not very good, don't blame me. Should be better/more stable than Phenderix/Midas, though.
http://skyrim.nexusmods.com/mods/16225
http://skyrim.nexusmods.com/mods/5283
http://skyrim.nexusmods.com/mods/23625
http://skyrim.nexusmods.com/mods/16022
http://skyrim.nexusmods.com/mods/13146
http://skyrim.nexusmods.com/mods/22753
http://skyrim.nexusmods.com/mods/8916
That should be a start.

Don't get fooled by the numbers of the downloads alone, some are less known but nonetheless very good. My advice is try Mighty Magick, you may be surprised.