Best plug in provider

Hi,

I am a recent FCPX user and like all idiots i've decided to get the mag wheels and go faster stripes before i've passed my test. what I mean by this is that I am looking to understand what is the best source for plug ins. I can see pixel studios do lots of plug ins and provide bundle discounts. I have also read up on other bolt ons like, CoreMelt: Lock & Load X, mTitle 3D, Twixtor, FxFactory Pro (less so) and Primatte Keyer. These latter effects can be costly and though I am not opposed to spending the money I need to get the results I want, I also don't want to waste money as it is hard enough earned.

Thanks in advance to anybody who can help me wade through the muddy swamp of ignorance.

B