I have one here, hooked up to my Model:Samples, along with an old trusty Alesis Micro Limiter.
I can’t say I have a preference between the two, but the drive section on the Platform is a huge bonus.
The Micro Limiter can be pushed a bit harder leaving you with less artifacts and much more gain left on the knob to make up with. It will distort at extreme settings, but not in an unpleasant way. And the single release knob does the job for keeping things from getting too pump-suck-artifacty. It’s simple and doesn’t sound bad for electronic music.
It’s hard to make sound bad.
On the EHX, you can get that gain back with the drive section’s volume knob. With the actual drive knob giving you more overdrive and color. It’s kinda like a 1 knob analog heat, when heard in conjunction with the compressor/limiter (which is the only way to use it, you can use both sections or just the comp/limiter, but you can’t just hear the drive.
It’s a nice add on, allowing you to control that heaviness, and you can certainly go crazy with it if you wish. There is a lot of variation over the life of that knob even though just turning it up a little gets things going.
The soft knee switch is another bonus that helps control the pump-suck gnarliness at high settings.
Lots to tweak and get your sound dialed in just right.
It feels like the Alesis is brick walling harder when it comes to peaks, it’s very set and forget, and it can squash harder.
Where as the EHX Platform takes a bit more tweaking on the release knob to find that sweet spot. It’s easier to over do it, and takes some more time dialing in. To my ears, the Platform is letting more peaks through and doesn’t have as fast an attack, even in limiter mode.
Moral of the story, either will do the job.
But if you have both, it’s good that they have unique strengths.
The two together is quite nice. 
If you’ve had bad luck with an RNC/RNLA at high compression settings doing bad things to bass, and never got around to the inline HPF loop in the side chain, I’d go with the Micro Limiter as it can compress far more before making your low end go south.
