360's are grand. Very smooth and neutral drivers. Some people like that about them. Others prefer the attack of the Focals. The 360's are particularly sweet becaue of the relatively large mid-bass. The 3" doesn't play nearly as low as the DLS IR3, but it's a very good set to have. Be sure to have an autorized install unless you know what you are doing. Even though the 3" is enclosed, you still need to determine the best installation. The passive xo of the highs basically suggests a low/kickpanel install. What made you consider the 360?
i like both the iridium 6.3s and the dyn 360s...so its a tough call. the dyns are a little too relaxed for me but i think its just because im used to my speakers. so its hard to tell.