I wish I had a logic analyzer plug in myself. That perhaps would be the greatest reason to go for the Rigol really, as once you add this to the Tek units the prices really skyrocket. If you do your homework, you'll find an interesting relationship between the Rigol scopes and Agilent. Another brand to consider if you're going more toward the digital side would be some of the entry level LeCroy units. Alternatively, you could consider something like this, which does a pretty good job, given the price and size:
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