Good call Gidge - I've heard them on mp3, not the highest quality and not done by an engineer I'd trust to construct a 'fair' test. I can take his opinions, I can take people's here, I can take the reviewers out of Sound on Sound. But basically my opinion on what they sound like counts for nothing, like I said.
But I can tell you what features they have, and I'll say again. If you want AD conversion, better metering and a more flexible compressor, look at the Tampa first. If you want EQ and the 'JoeMeek' sound compressor (which Paul White wrote specifically on, and I'm confident that he knows what one sounds like), then look at the threeQ.
What's so tough about that? I don't get it. I'm not claiming anything here in terms of a great knowledge - you could work these things out yourself from a JPEG in Google Image Search. You don't have to buy them both to do that.