best centrifugal juicer

Do centrifugal juicers destroy vitamins through friction?

I read a couple years ago that they do. Would'nt this also mean that blenders also do? I have read that blending is the best thing for you because it releases "phytochemicals" but I've been leaning towards geting a triturating or masticating juicer lately. I am summoning the Juice Guru.

No, these juicers do not damage vitamins. Vitamins tend to be small molecules and the type of friction caused by any kind of juicer is not likely to destroy anything like that. Heat and chemical interaction are more likely to do that.
The fresher the juice, the better the vitamin content.

Slow Juicer Instructional

Hamilton Beach Big Mouth Juice Extractor 67650 $65.00 Juice extractor-Drink your fruits and vegetables-Fits whole foods for fast, easy juicing-Powerful 1.1 HP motor-Dishwasher safe parts-Stainless steel strainer-Easy to assemble and store-Cleaning brush included for easy pulp removal-Juice cup included...

Breville JE98XL Juice Fountain Plus 850-Watt Juicing Machine $179.95 Maximum juice and minimum preparation required with the 3" feed chute. Easy assembly and clean design that can be washed top shelf of the dishwasher. The dual speed motor spins the filter basket at 12,000 RPM for hard fruits and vegetables. Low speed is optimal for softer fruits and leafy greens such as cantaloupe and spinach....

Breville BJE510XL Ikon 900-Watt Variable-Speed Juice Extractor $199.95 The 900 watt, high-grade 5 speed motor features a built-in electronic smart chip that increases power to the cutting disc under heavy loads. As a result, the ¿lter extracts more juice and can make an 8 oz (250 ml) glass in just 5 seconds. The 3" (7.6 cm) feed-tube allows for the easy and ef¿cient processing of whole fruits and vegetables, without pre-cutting, slicing or peeling. It is uniquely ...