GC morphing question

[Jednowlosy]

hello, currently I'm using the 3 pgm+magic item formula to morph worthless hellmode GCs in order to get skillers (got 1 so far, meh). I don't know if it's not a mistake to use the same GC consecutively - does it retain its ilvl? Should I use only "fresh" GCs and throw them away after a bad morph?
I've also seen guys using meph/diablo gcs, are they any better?

[Orphan]

Yes, the ilvl remains the same for the 3pgem + magic item recipe, so you can continue to use the same item over and over without reducing it's effectiveness.

Diablo/Baal/Nihlathak GC's are only slightly better than the others simply because they can spawn with +41-45 life, as opposed to other Hell GC's that have an ilvl of 77 or greater that can only spawn with up to +40 life. If you're just after skillers though, then it doesn't matter whether it's from Baal or not. As long as the mlvl of the monster that dropped the GC was 50 or greater (which would include every place in hell you can get a GC from anyway) you're set.

[sangfagel]

I've also seen guys using meph/diablo gcs, are they any better?

*Orphan has answered your question already. Nevertheless I want to correct the *Meph GC* missunderstanding since it appeared in 2 posts under the short time:

Mephisto´s GC´s are ilvl 87 and they are not anything cpecial!

all GC´s ilvl 77 and higher can roll "of Vita" suffix (+36-40 life)

GC`s ilvl 94 and higher can get higher "of Vita" suffix (alvl 91, +41-45 life).

There are no GC´s ilvl 89-93 and 96-98.

Highest affixes on GC´s are: affix "Bloody" (alvl 75), suffixes "of Maiming" alvl 71), "of Vita" (alvl 75) and "of Vita" (alvl 91).