Over the years, I've bounced back and forth between converged and non-converged systems. I'd try things one way for awhile, and when I eventually got tired of the compromises, I'd switch back to the other approach.
Like others have said, the choice depends entirely upon what features are most important to you and which compromises you can tolerate. For me, I thought having a gorgeous screen and speed were the most important. But, once I gave my Wizard a chance, I found out that the convenience of getting to my e-mail, to text messages, to the Internet began to outweigh the inconeniences of a QVGA screen and extremely limited memory.
So, for the time being at least, I'm back to being converged...
Old Market Researchers never die...they just get broken down by age and sex.