Sporasub Twins Vs. Mares Avanti Two Channel

[shunshun]

I just recently got two pairs of fins, Sporasub Twins (black), and the oringinal Mares Avanti Two Channel (pink). Could you please let me know what's the difference between these two pairs of fins? Some researched has shown that the Twins has shown really good result, 4.4 mph, but I can't find anything about the Mares oringinal fins. What's your opinion about them. Help please. Thank you.

 

[shunshun]

Any comment please? Which one would you pick? I have done some research about the sporasub, but the Mares is exactly the same. Don't know which to keep. I might need to try on my own. Just want to see if anyone has any preference.