I haven't flown much outdoors (gusty winds) so I can't judge open field flying. It's 25'x12' in my living room and it's ok. If it's VERY sluggish in 40% mode, it's much more responsive in 60% mode, in 100% mode it's a fool if you move the directional stick a lot. The 1st battery flew as expected with the 3-axis system, the 2nd battery drifted around after a few hours. Next day 2 batteries for a few hours and everything seemed back to normal. This will be a problem for a newbie. I keep it anyway