Third party SSD optimisation Yosemite

Unaware of the current issues with Third-Party SSD support on Yosemite I went ahead and bought a 128gb Crucial MX100 SSD.

I hear a lot of problems about enabling Trim on Yosemite etc.

I recently download Chameleon SSD Optimiser. Using this software I enabled Trim and smart optimisation.

QUESTION 1:

What is all the commotion about Trim? Chameleon seemed to have no problem enabling Trim.

QUESTION 2:

What options should I set with Chameleon SSD Optimiser (i.e - Sudden Motion Sensor, NOATIME, Time Machine, Sleep Mode/Image)?

Basically, What is is that Chameleon does to optimise SSD performance and where does Trim come into this, and why are people giving out, this is my main curiosity? Everything seems OK to me...

I would like as much info as possible but assume no prior knowledge