I guess you now are in for the "say bye bye to all future financial stability".
My personal opinion:
If possible: Buy the Spaghetti/Riya from JohnYayas. You will not regret it.
Is the ISHOW DAC i bummer? No - it is not. You are able to use BOTH DAC`s for the same show with two projectors. You are not there yet, but we all know, you will be there quite soon.
The Riya DAK is perfect for Graphics, while the ISHOW DAC is more than usefull for beams and simple graphics with Spaghetti.
Just to keep you up to date, there are an option also for a cheap software/DAC bundle with GLS from Riya themselves. This will only work with the RIYA DAC, bit it is a nice piece of software. The GLS software, have a rather complexed user interface, but once you get the hang of it, you are able to make incredible abstract patterns and shows.
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More projects than time available.
More projects started than finished.
More money spent than earned.
More failure than success.
Just got to love lasers!