At the kind of cost you are looking at (bitscope as an example), why don't
you look into a cheap used logic analyzer on EBay?  There are several on
there with pods and everything for between ~$50 and $250.  Many of them
offer many more ports and higher speed capability and triggering options.

Just a thought.  I mean, unless you *really* need high speed (which destroys
your other ideas as well) - you don't need to spend big bucks on the super
high end cool feature super fast analyzers.

btw - the bitscope does have an 8 logic inputs thru a DB25 pod, not just the
two probe inputs, but the software for it is still rather lacking unless you
can write your own or make use of someone elses.

-Tony

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