Bleah, I've typed a few paragraphs and the comp froze. ><''
I'll...try and type them again.
Ok, basically it is this:
Comparing base 20 TS/LM, 10 FO/1 CM and 20 FO/1 CM
34 TS/LM:
1905-2446
24 FO/15 CM
318-323
VS Hell Meph (26850 HP, 50% LR, 25% CR)
TS does 952-1223
FO does 254-258, 256 avg.
34 FO/15 CM:
458-463
366-370. 368 avg vs Meph.
However, FO dmg is per shard. Vs a boss monster like Meph, most of the times 6-16 shards (10 shard avg) will hit.
So the actual different bewteen the two FO is:
2560 and 3680.
Orb is totally worth maxing if a sorc is doing Meph run.
(And that's a lot shorter than what I've originally typed ><'')
By the way, most Meph MF sorcs have less than 100 energy.