As far as I know, there are more fluent speakers of Klingon than of Quenya.
Although the *media* reports the use of Klingon more frequently than Quenya, I've seen no data to back this up. A quick google search pulls up 133,000 hits for Quenya, but only 14,000 hits for tlhIngan (the Klingon language). That's a considerable difference.
The difference here is that "quenya" is the name of the language in English and many other languages, while "tlhIngan" is in Klingon.
While there is no data to back either claim up, my vote is for Klingon. I know real people who speak fluent Klingon, but you are the first Quenya speaker.
Mark