Alright so, I'm having a tough time deciding which job/jobs I should level next, and figured the rest of you nerds could help me decide.

First I have Blue Mage at 76, but that needs blue magic skill leveled to be useful so thats one thing I'm going to do, however utility wise BLU isn't the most useful and I already have 1.5 DD jobs (counting COR as a half).

When I level a job I mean to gear it pretty decently, not just half ass, so I don't want to overload with a bunch of shit geared jobs. With that being said I'm looking for some kind of healer I think, or maybe a good soloer… or maybe a tank? I don't know.

Currently I have WAR and COR which most of you probably know. Here are what I think could be options.
WHM- OP healer right now, access to huge MP as a taru, able to duo things easily with MNKs and other strong DDs, only really one trial needed for weapons.
SCH- Less potent healer, but adds more versatility with weather/helices/enfeebles/nukes, can be formed into more of a jack of all trades mage which is cool.
RDM-Basically the same as SCH however only has access to cure4 which scares me. Infinite MP more or less. Strong enfeebles, solo capability. Pimp hat.
NIN- Seems fun with dualwield, grellow procs through ninjitsu, solo capability(I think?) more time on weapons for trials though
MNK-High HP, can tank things now, lots of time on trial weaps, solo capability(I think as well?), might fix my obscene amounts of death as a taru, I sold a brownbelt i bought for cheap ;-(, high damage
BLM-high int and MP as a taru, huge numbers, solo capability, grellow procs, have to level from 24-30 before leeching

So those are my ideas so far. If you read this wall of text and respond, thank you, your help is appreciated. If you have other ideas and make a good argument type that as well.

Bottom line is I feel lost in this game, so much I wanna get done, making things hard to decide on.

I wouldn't discredit BLU its an extremely versatile job and I would encourage you to finish leveling/gearing it.

As for the jobs you listed I think the linkshell would <3 you if you leveled WHM. However I think you would <3 how strong MNK is and it would be a good job for you to have in low man situations when you needed to get stuff done.