Since this has apparently become confessional... I typically prefer well pallettes, too! I use an aluminum one (I think I bought it from MIG) that I really like, but I ordered a ceramic palette on Amazon after I saw BAM's new toy. Hopefully it will arrive soon. I really like the size of aluminum one because... I store it in a lidded wet palette to keep the paint from drying overnight! I have used and at times really enjoyed the wet palette, and will definitely use it again (I love the range of tones you can achieve from pools of your main colors), but I also feel like I've improved by relying more upon glazes of color, which wells virtually demand. I always use soft (cloth) abrasives to get it clean, as any scoring (which is inevitable with plastic well palettes) holds little bits of paint, schmutz, or anything else. I imagine the ceramic palette basically eliminates this issue, which is why I bought it (even the aluminum one can be abraded pretty easily, and will leave tiny metal particles in the wells which will then get painted on if you're not careful).
Anyway, if you can and don't, try storing the well palette in a humidor (my Masterson Sta-Wet, in my case) to preserve those nice colors you mixed from one session to the next!