RTF is a bit of a bug bear and I really do think it means you've got kite, lines and handles in one package. So don't expect it to fly out of the bag! I have a 2.5 and have given as a pressie a 3.6 and have flown a 5. I've tried all in varying conditions. The 2.5 is very fast and furious in a blow but won't lift me skyward. The 3.6 in similar conditions gave scuds with wet shoes in excess of 50 - 60 feet on an empty beach. The 5 was flown on a slightly different day when I was interest in going up!!'I weigh 14stone and it did pick me up. I have to say though they are not designed for lift - but in a blow!! The backpack is a bit "hit n miss" I got a replacement bag for the 2.5 and immediately put a second line of stitching in. I would agree that pounds per fun the beamer is second to none. I have added to my kites with a Rad Pro 6m. A bit of a blimp but I have to say that it is a bit more exciting to fly than the Beamer 5. But if you think HQ handles are poor try the Rad Pro handles - they ARE poor!! Handles can always be replaced!! Try a pair of flexi's or ozone's. BTW I have flown a number of kites inc the Samurai, Rebel and Blade. So why my limited quiver of a 2.5 beamer and a Rad pro 6m. Easy it's down to pound per fun!!!! And pound for pound they win.