Ah, in that sense.Duller/Less bright != worse...
Well, it really depends on the approach. I personally like my screen bright because I *actually* use my portable *outside* (I know, isn't that weird? Not in the sarcastic sense, but you don't get to see that very often...) so a good backlight is essential to me.
Besides, I try to build my personal ranking on more than just "screens", the 200x is, to me, the best of "both" worlds - it has a brighter and high-quality screen compared to the 100x and at the same time it's fully hackable and it has high built quality compared to later models. It's just... "durable".
Although I must admit, the 300x looks somewhat "prettier", especially the Monster Hunter limited edition. That is, if "pretty" can be conscidered a quality here. I'm a bit pragmatic so I tend to ignore that factor unless something is downright ugly (Hello, E1000. The only pretty part on that build is the Start/Select/Volume panel. Futuristiiiic...).