Can any one shed some light on which is best or what is really different about these two products?
http://hobbyking.com/hobbyking/stor..._30cc_ARF_UK_Warehouse_.html?strSearch=yak+30
http://hobbyking.com/hobbyking/stor...Yak_54_30cc_Gas_1820mm_ARF_UK_Warehouse_.html
http://hobbyking.com/hobbyking/stor..._30cc_ARF_UK_Warehouse_.html?strSearch=yak+30
http://hobbyking.com/hobbyking/stor...Yak_54_30cc_Gas_1820mm_ARF_UK_Warehouse_.html