Garmin eTrex 20 versus eTrex 30

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rb58

Enigma
Location
Bexley, Kent
For a variety of reasons, I've decided to swap my Garmin 705 Edge for an eTrex. I'm looking at the eTrex 20 and the eTrex 30. The difference between the 20 and the 30 seems to be that the 30 has an electronic compass and a barometric altimeter. Does this mean that the 20 cannot give me a bearing, or record the amount of climbing?

Also, anyone out there got one of these devices with any recommendations?

Thanks
 
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