Two SSD-related questions

Hi, I'm a long time Defraggler user for HDDs, but I'm still relatively unschooled on SSDs. I did search for other threads, but did not spot answers to either of these questions.

I have two SSDs, both made by Samsung: A month old 256GB 850 Pro (this is my OS drive with Windows 8.1 x64 Pro currently installed), and a slightly older 1TB 840 EVO with games and Steam. (I also have a mechanical drive with "everything else" like music, videos and data files).

I have not used Defraggler on either of these drives yet, but I have run the Windows "Optimize Drives" (TRIM) on both.

1) Should I ever perform a boot-time defrag, since my OS drive is an SSD? I'm guessing "no" but would like confirmation. I do know that a "normal" defragging of an SSD is never recommended.

2) Since these are newer, TRIM enabled drives, what is the difference (if any) between Defraggler's SSD Optimize* and the Microsoft built in "Optimize Drives" function? *I know Defraggler would be zero filling older, non-TRIM drives, but these are both TRIM enabled.

Thank you all for your time reading this and for any insight you can provide! :)

opinions on defragging SSD's are like armpits - every one as at least one and we all think everyone else's stink. :)

you won't get a confirmation, but for my 2 cents worth, SSD's simply don't benefit, it's just in their technology to need it.

having said that, I've read a few reports that the initial 'scare' of shortening their lives may now have been over-hyped (fancy that) so it may not be such a earth-stopping thing to do after-all.

but you still can't get away from the fact that physically shuffling pages/blocks around on a solid state structure is just pointless.

Optimise/Trim - Yes, Defrag - No.