Recommendations for (carrot) juicer

I am in the market for a new juicer and am looking for something that will do a good job with organic carrots.

Ideally, the juicer would be:
1. able to extract most of the juice and nutrition out of the vegetables
2. good with carrots although I may use other vegetables
3. not contain parts that are likely to leach chemicals into the juice

Does anyone have any recommendations? I have an old Braun juicer that is getting tired so I thought now might be a good time to replace and/or upgrade.

Thanks.