Clean Cotton - no discoloration (pure white bar with pure coconut oil), but it definately speeds trace and of course, it heats like a sinner! Use caution with this one so you don't overheat your soap.
Lavender - I don't think this one changed the trace at all. No discoloration either. I was never a fan of lavender, but I like this one. VERY strong, I only use about half of this as I would of other fragrance oils.
Lilac - Speeds trace and causes ricing if you're not careful. It traces so quickly in fact, that in a partial traced soap, if you add your 30ml all in one spot, you'll have a clump of soap right there, without possibility of getting it to mix properly... My next batch, I plan to add it right after my lye and goatmilk, all in one go, no trace.
Cucumber Melon - Works just fine, no trace, no discoloration, no overheating.
Very Vanilla - like an old lip gloss I had as a teen, that fake vanilla icing scent. I LOVE IT! I can't remember if I used this in my soap or just the vanilla from BB though, so I can't give a CP soap review. Guaranteed to turn it a chocolate brown though, lol.
Baby Powder - another one I haven't used in soap, but I have to say, it smells just like baby powder. Nice and strong scent, but not a nauseating scent.
Coconut - Turns tan color, no overheating or accelerated trace.
I also have Pine Cones (smells really good, like the real thing), Diane's Carnation (very light, easy scent), Mulberry smells devine, Dragon's Blood smells pretty good (in a hippie kinda way) and Fresh Coffee smells spot on. Basically, anything that has a specific "thing" (coffee, baby powder, lilac, etc) all smell exactly like it should. I'm dying to put another order in, but waiting until the last day of the sale, so that I'm positively sure which ones I want to order.