AlphaTangle Opinions?

I could use your opinions...
Do you own a copy of AlphaTangle? The original black covered one that I self-published, or the red covered one from Design Originals? Do you have a preference? Are there any changes you'd like to see to an updated or revised version? Larger? Smaller? Unshaded? New letters? Labeled tangles or no? Anything... Tell me your tangled (alphabet!) fantasies.