ну стоит она не намного то и больше насколько я знаю.........
а про отличия - их не много.и они не столь существенны впринципе... вот прямо с офицального сайта
http://www.evolution.co.uk/support/uc33eupgrade.htm?
Differences between the UC33 and UC33e
* The master volume fader is now F9, not F33. Note – The presets in the UC33e's ROM have been corrected to allow for this change. Therefore your overlays are still valid!
* There is a different function panel to cater for the extra functions. You can download a template of the UC33e's function panel here. This template is actual size, and will fit over the function buttons of your UC33. Make sure you do not have the 'Fit to page' option ticked when printing.
* You will see the value the controller is sending out is displayed on the LCD as you turn it.
* Your controller is now supported by Enigma. Enigma is free to all registered M-Audio users. Please go to the Enigma download page to register your UC33 and download your free Enigma application.
Explanation of the extra features
Controller Mute – This enables you to re-position a controller on the UC33e without sending out any MIDI signals. This is useful if you want to calibrate a controller to the position of a virtual dial on software. You can use the LCD display on the UC33e to move the controller to a suitable position to avoid a parameter jump. Controller Mute is engaged by pressing the buttons. To disengage, either press controller Mute again, or press one of the assignable buttons (which are unaffected by the MUTE function).
Memory Dump – This allows you to send a Sys Ex message that describes the contents of your memory to your sequencer. To re-program the memory of the UC33e, play the Sys Ex message back to the MIDI input of your UC33e. The Enigma software application can be used to program the memory of the UC33e using software.
Device ID – may be required if you ever want to use more than one Evolution device at the same time. The device ID is used to specify which device the memory dump is intended for. The default setting is 127 which means a memory dump will be recognized by all compatible Evolution devices. We recommend you keep the device ID at 127.
For more detail on the extra features of the UC33e, we recommend you review the UC33e Advanced User Guide from the Manuals page and the Products Comparison document.
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короче как я считаю два основных отличия это отсутствие у UC33
1 функции ctrl mute - нажимаешь две кнопоички... и можешь менять положение ручек - ничего посылаться не будет... потом снова нажимаешь и положение всех ручек посылается на комп...тоесть резкие штуки можно делать.. я её не пользуюсь
2 можно указывать ID номер девайса... это нужно если захочешь использовать несколько контроллеров одновременно... можно указать им разные ID...