I have both the E-1 and the E-330 and never longed for more. But for me there is no doubt that - out of the two - the E-1 is better suited for manual lenses.I think it'll still be my main camera, with the E-330 becoming one for manual lenses and macros.
With the smaller and darker OVF of the E-330 focusing means hit and miss. Furthermore, out of eight different E-XXX cameras I have owned so far, only one single copy happened to have a precisely adjusted matte screen/mirror combo.
Herbert
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http://www.pbase.com/herbRD
Olympus E-1, E-330, Vario-Elmar 14-150mm