Smape has compared the Motorola Rokr EM30 & Sony Ericcson W302 in a detailed article.
An important point is that Motorola and Sony Ericsson took different paths on their chase of Nokia 5310. W890 was simplified to a huge extent, dropping its A200 platform in favor of a Sagem ODM-developed platform which is now used in W302. The materials, assembly, audio and misc things – everything was curbed and is distinctly different from the senior model. The continuity is just nominal, which is a very ambiguous step, given that the predecessor model was far from perfection itself, though much better than W880, which didn't even have a FM tuner.
The Americans took a smarter step by keeping EM30 pretty close to E8, which actually is little than a new version of the older handset, coming in different colors. The functional simplifications (memory, navigation wheel) help to drop down the price, so by the beginning of the sales the solutions will sell for roughly the same money. It's extremely important that Motorola preserved the fashion impact and even kept the same materials. This makes the solution the best offer in its class in that aspect.
