*CoinOne is a VERY visual 4 coins across, but it's gaffed and I heard it's very difficult, but all coin magic is difficult so...
I personally prefer David Roth's Winged Silver, because it uses no gaffs and your spectators will remember exactly what they'll remember if you perform CoinOne: the magician go 4 coins from his left hand to his right hand without moving his hands.
*CoinTwo is a 3 coin flurry.
I've seen better flurries out there... with basic knowledge of coin magic you could construct your own 3 coin flurry.
If you still want a gaffed 3 coins flurry, I'd go with Troy Hooser's ExTroydinary, it's the best 3 coins flurry I've seen.
*3 Fly is 3 coins across at fingertips and at eye level (so the spectators see you, and not just your hands...)
there are a lot of different versions of the 3 fly routine, I only know Chris Kenner's 3 fly (from his book Totally Out Of Control), it uses an extra coin but no gimmicks, it's a pretty good.
Overall I think 3 Fly routines are TOO visual, to the point where it's kinda confusing to watch for laymen.
I prefer an impromptu, slow, 3 coins across that is easy to follow and leaves you with nothing to ditch (3/4 Across by Greg Wilson, Mr Clean Coins Across by Jay Sankey, Jet Coin by Fujii Akira, and more)
Hope that helped