Which is better; the samsung solstice II or Sharp effex?

Both have expandable memory via the MicroSD slot, so I wouldn't worry too much about the memory. As far as size goes, the Solstice is much smaller than the Sharp, which is great if you're looking for a more compact, lightweight phone, but it also means the touch screen is smaller. (The Samsung is 3oz, the Sharp is 5oz.) The Sharp has a physical qwerty keyboard to compliment its touch screen keyboard, while the Solstice has only a touch screen keyboard. The camera resolutions are the same at 2mp, but the FX has greater zoom capabilities. The Solstice has no dedicated headphone jack. But I believe it has slightly better battery life (esp. talk time) than the Sharp FX. As far as the rest of the specs, they're about even.