Storm Corruptor Help?

First let me say, I have been creating and deleting TONS of toons, still looking for one that feels right.

I am really drawn to the Storm Summoning set for Corruptors, but have a few questions.

What would be the best primary for:

1. solo mainly but also group support
2. not so endurance heavy that even after Stamina I am out of energy every minute
3. general fun factor

NOTE - I am a newb to CoH/CoV, my highest toon is 21. But I am a veteran to MMORPG's going back to Ultima Online.

Also, any build posts would be extremely helpful

Storm is a very fun set, but its also a very endurance heavy set, so no matter what primary you pair it with, you are bound to have some endurance issues. Its synergy with primaries depends heavily on how you choose to play your stormy. A good example being dark/storm, which has nice -tohit synergy, and also packs a killer stun combo with dark pit+ thunder clap. Devastating combo, but requires you to not have hurricane on when you want to do the combo (usually at the beginning of fights.) Some people may not like that playstyle.

AR/storm or energy/storm have nice kb synergy. Ice/storm has nice slow debuff synergy and its a great choice if you like targetted aoe's. You really cant go wrong.

I personally play a sonic/storm, which is a beast. Teams love the -res layed down mainly by the sonic attacks+ freezing rain. I will gladly post my IO build if requested. It was ridiculously cheap to build, especially considering what its capable of.

I'd recommend Sonic. It's an incredibly good set for soloing with the cone sleep and -resistance on all the blasts to soften up bosses. It's also very endurance efficient which helps a lot with Storm being so end-heavy.

I dunno about fun factor though, I personally love Sonic mechanically but find it dull as ditchwater to play. I'd try it up to level 4 so you've got both Shriek and Scream and see what you think of it since those are basically your main attacks. Shout is also there but much later in the set and really, really slow so you're better off spamming Shriek/Scream. There is the sound of it too, which puts some people off but again, a highly personal thing so you'd have to see for yourself.

Seconding the Dark suggestion. Damage is on the lower side but it provides a lot of utility (most notably the self-heal) and it's fairly good for endurance too. It being low on damage isn't such a big deal considering Storm has damage in boatloads.

If you want more general help for /Storm I've got a guide for it in my sig (and other Corr sets too) if you're interested

/shameless plug

As mentioned this is a matter of taste, but I find that fire's ability to make things dead quick to make it the most fun. This is especially so with the 1-2 combo of dropping down a freezing rain and then rain of fire and just watching the double scourge bonus roll in, which is even better in teams.

Fire is also less end heavy in the sense that you need less attacks to defeat a mob. It lacks mitigation when soloing as a trade-off, but then as a stormy you're going to have boatloads of that.