Would you recommend Motorola Droid X?
I'd recommend ANY android device over WinMo. Seriously its that far ahead of the game.
As for specific phones, I like the Galaxy S over the Droid X for just a few reasions:
The screen is gorgeous, no really go to the store and watch a movie or video clip on them side by side.
I like the smaller (just slightly) form factor as it fits neatly in my pocket.
The speed of this thing is fast, no REALLY fast even on the display models right out of the box. I don't know if the moto blur slows it down, but the Touch Wiz is greased lightning (btw I don't use touch wiz, it was just for comparison. I like Launcher Pro or ADW Launcher).
the CPU in the SF is a Humming bird 1GHz processor vs. the Droid X TI 1GHz. Which sounds the same but they are not. The Humming bird can over clock to 1200MHz (which I don't do) and can even undervolt by -100mV and still screams while playing games. I mean the battery on this thing out of the box is "OK" but with the custom kernels this thing can last almost 3 days of moderate use without any charge.
The 3D Game performance is VERY noticeable in favor of Galaxy S, but if you are not looking to play games this won't matter.
The phone does NOT come with wifi hot spot out of the box like the Droid X does, but I do have an app for that (HA! just like iPhone commercials!).
I don't know about the hacking/modding/custom rom community for Droid X, I'm sure its outstanding, but there is a good community for Samsung Fascinate, but its mostly on IRC. I really do like the 8MP camera on the Droid X and the 4.3" screen, its just not as purdy as the Fascinate, and the form factor fits me better.
In the end its all about personal preference.