Keith,
right now I am using a Sony Mini DV DCR PC3E with an excellent Zeiss zoom. I think that it's a very good compromise between weight and quality. The main limits are: just one LCD for all colors (instead of three for differente colors) and the autofocus that cannot be excluded (to have complete control over the focusing process). However, to have all these features, you have to give up on weight and portability and be prepared to pay at least 6000 dollars (which is about double the price I paid for mine in 2000).
Cheers
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Korg Kronos 61 and PA3X-Pro76, Roland G-70, BK7-m and Integra 7, Casio PX-5S, Fender Stratocaster with Fralin pickups, Fender Stratocaster with Kinman pickups, vintage Gibson SG standard.