I would think they would have thier own sonic character being thier from different companies. I’ wouldn’t be able to tell the difference between the two. I don’t have any pedals from strymon. I could probably tell between my Roland RE201
Space Echo and the Space since I’m familiar with things the space echo can do that the Space doesn’t. But then again maybe I would be wrong in a blind fold test. With the Space you can go from one preset to another and it has the readout of the preset name. The space echo doesn’t have a readout . It’s setup differently. The space echo has that pedal you depress and it simulates speeding up the tape heads and sort of takes off into outer space. That’s unique, where the space doesn’t offer that unless I’m not aware it having a similar feature. I don’t know the Space all that well yet.
I’m not that deep in understanding all the various things both pedals can do. I have a very basic understanding of each.
I haven’t really maximized thier potential. I use them sparingly since things can get muddy up real fast if you turn the knobs too quickly. I like how the space freezes the sound when you set the Decay to a long release just like on an analog synth. It makes the sound sustain infinitely.
I have been playing around enough with the Eventide H9 such that I can say that I quite like it. I really love the fact that it incorporates the functionality of several Eventide pedals. The actual physical interface is a bit more involved than I am interested in dealing with; a somewhat baffling set of button combinations. But the iOS app for it is pretty great. I went through the zillion available presets and tweaked and selected a batch that I really like from the different algorithms and saved those to the physical device. So now I have about 30 presets that appeal to me that I can dial through quickly.
I played around a bit and recorded an experimental “jam” with the Model D, prophet 6, novation peak, and Nord. I was curious to see how all of them played “together” would sound. A sonic mess as you would expect; but kind of fun too. The Model D output is going through the Eventide H9 with a Flanger patch and into the Strymon Timeline with a basic echo. The Prophet 6 is sent through the Strymon Mobius with a widening chorus effect and then through the BigSky with some big hall effect. The Novation peak is using its onboard effects and I used an onboard chorus and pingpong delay with the Nord rhodes sound. So it was just a huge swirling sound of wonderful synth gooeyness.
Oh - And I patched the keyboard after pressure on the Moog to the filter. I had not used that much and was curious to see how well it worked. It is a bit sensitive, but I really like how it functions. You can hear it opening up the filter in this “song”.
7 months later I now have the Eventide Timefactor and Eventide Space. The Eventide Pitchfactor looks interesting 
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Eventide lowered prices for thier Factor Pedals but I believe thier pricing has gone back to what they were before.
They went from $500 to $349 back to $500.there are 3 factor pedals. Timefactor,Modfactor,Pitchfactor and the Space.
There’s a video on sonic state demonstrating the 4 pedals.
Congrats, they’re both great pedals!
They are and expensive. Know I need the Pitchfactor and Modfactor. LOL Thanks