I often find that for a "family" of yeasts, like the "American Ale" family, for example, there is one strain that I far prefer over all others 90% of the time. Of all the American Ale strains - WLP001/Wyeast 1056/US-05, WLP051/Wyeast 1272, Wyeast 1450, WLP090, Wyeast 1332 (which isn't really in the same category, IMO), ECY10, and Pacman, I quite liked ECY10, but since it is an insane hassle to get that on the west coast, I just don't bother. Otherwise, I like Pacman 90% of the time, because it is VERY clean, flocculant, consistent, and it lets me ferment VERY cold. But since it can be somewhat difficult for me to obtain Pacman in the bay area (needing to drive 30 min to get some for $3 more than I pay for other yeast strains), I prefer good ol' WLP001/Wyeast 1056 over all the others 90% of the time. And since I can always get fresh slurry of it for free from nearby brewpubs, I just really think WLP001 is the bee's knees. It is fast, consistent, alcohol tolerant, fairly temperature tolerant (I am pretty happy with its performance anywhere from 58F to 68F), and my only real problem with it is that it can be a pain to get the yeast to fall out of suspension, even with a cold crash and gelatin (no yeast has ever given me as much trouble as US-05 in this arena).
I used WLP090 3 times from the same vial. The first beer I made, a hoppy red session ale, came out fine, though it fermented no faster than WLP001 and it was far less flocculant than Pacman. It also finished a little higher than expected. I then tried it in a porter that I have brewed several times before, usually with English ale strains - it came out as expected. The attenuation was notably less aggressive than with other American Ale strains (70% - which is the same as that recipe will give me with Wyeast 1318). And finally I brewed a big red rye ale with WLP090 - this one oddly fermented quite dry (83% attenuation) and tasted fine. What I gather is that WLP090 is an acceptable, if tempermental strain. It will ferment very dry or very sweet, depending on wort fermentability, and it is fairly neutral, but doesn't help the hops "shine" the way that Pacman, Chico, and ECY10 do. All in all, I would consider it a decent strain, but its speed didn't really outperform WLP001, though it was more flocculant. If I wanted a flocculant, turbo-speed yeast, I would just use WLP002/Wyeast 1968 and ferment at about 62F.