Best ways for a Summoner to Heal his Eidolon?

[Magpied]

I noticed infernal healing and rejuvenate eidolon on the summoner spell list. Infernal healing seems to provide utility in that you can also use it for yourself and other party members but is a bit weaker. Rejuvenate Eidolon seems to be significantly less versatile.

What are your thoughts?

[ArmouredMonk13]

Well, Infernal Healing doesn't work in-combat very well, is from a splatbook, and can cause inter-party problems. We have to send the Paladin in our party to "Investigate some suspicious architecture" whenever we use it, since he suspects the entire party is Evil and has a low WIS&INT.