I had almost constant Safari reloads on my Air using iOS 7 and I'm looking to get an Air 2 for my husband next month (well for me, he would get the Air 1).
Anyway I've beeb paying very close attention to the behavior since I updated.
1). I do believe the reloads have lessened.
2). However, I notice that even though I don't see the little blue line denoting a reload at times when I move from a tab and then return it returns me to the top of the page. Not where I left off. I think denotes a reload. Only happens about 30% of the time so I'm ok with it so far.
3) I have yet to need to exit Safari, open another app for research etc, and return so don't know if it will continue to reload there.
4) I have had several crashes, Sarafi, Weather Channel, ATT Uverse app being the most predominate.
Oh, one more thing, funny, it's almost like my eyesight suddenly worsened after the update. For some reason the text seems less clear, less dark. I have Bold Text turned on and even enlarged the text. Of course Safari doesn't use either of those options. But the text in Safari seems lighter and smaller than before. I've compared it to my husband's ipad 3 and the text does seem different. The 3 seems easier to read now. And don't tell me to get my eyes checked, Sarfari is the only place I'm noticing it.
Having said all that, so far I'm pretty happy with the update.