Nowadays, I tend to favor lighter knives. The Para's lighter & if you sprang for the D2 Para, you'd have one of the best blade steels, IMHO. There's nothing wrong with Emerson's 154CM & it's probably pretty close to Spyderco's S30V, but I found their CPMD2 to be better than both in edge holding.
As for locks, I don't mind a well done liner-lock & the Emerson definitely is that. However, I also like compression locks & it is ambidextrous, which is nice too. I'm right handed, but depending on what else I'm carrying, I like to have a knife on my "weak" side, too.
Right out of the box, the Para's going to be a better user, IMHO, because of it's "true" V-grind & edge. While the CQC-10's blade is definitely better than their chisel grind tantos, it's still not as good as a full V-grind edge in comparable steel. However, if you're good at sharpening, you should be able to put a 2nd edge on the Emerson.
The Para also has a choil, which is nice if you need to do precision cuts. However, the Emerson has more blade. Other than I prefer tip-up, the shorter blade on the Para is probably my only gripe about it.
Good luck with whatever you get.