I just bought my 6120 a week ago. Its pretty impressive, a small powerfull phone, fast, good graphics and camera.
I have it for everyday use, internet. The speed is fast too... (its HSDPA)
But I have a problem using j2me applications, it looks like all fonts are bold.
eg, I have a gmail client, using my old 6233 and n73 I can distinguish read/unread messages (unread are bold, others regular), but not 6120 (except by looking at envelope icon).