Just different adaptations of the same famous wuxia novel by Jin Yong (Louis Cha); everyone has their personal favorite version(s). You can really choose any of them, but know this is the first part of the Condor Trilogy and is followed by The Return of the Condor Heroes; that latter is a different story. The third is Heaven Sword and Dragon Saber.
The 1st one to this trilogy is Legend of the Condor heroes. I liked it a lot. It was funny and had a great story line. I haven't seen the other versions but this is one should be a definite watch. The 2nd one to the trilogy is Romance/Return of the Condor Heroes. I liked the 2014 version a lot even though most people gave it a bad review. I've seen both Romance and Return of the Condor Heroes and both had its pros and cons.
In both dramas Ariel Lin is a smart girl who'll do anything for her beloved one even to give him some precious advice during time of war. And if you liked Ariel Lin in one drama you'll surely like her in the other one .
Other than that Prince of Lan Ling and Legend of the Condor Heroes are totally opposite from each other and in my opinion Lan Ling Wang was way better !
Other than that Prince of Lan Ling and Legend of the Condor Heroes are totally opposite from each other and in my opinion Lan Ling Wang was way better !