Hi I use my phantom 2 with carbon fiber props, but these are the typical prop shape as it was included with my phantom. like this shape http://www.ebay.ca/itm/4X-Carbon-Fi...Control_Parts_Accessories&hash=item20e3c6601a however, on ebay I also see a totally different shape. More rounded, deeper, more like a fine paddle. Like this http://www.ebay.ca/itm/2-x-Balanced...Control_Parts_Accessories&hash=item486325fc4f Can you please tell me what is the difference - if there is any - in actual use? I can't find any info about it. Many thanks.