Assuming you have a tippman 98 your barrel thread should be one of the two most unique styles on the market. 98 threads look like this:
If its not that you're likely using a5 threads which are different, smaller and more tightly packed. Chances are the VL is spyder threaded versus your tippman threads although I could be wrong on your specific style, it is always best to consult your manual. There are varying other thread styles, the most common of which is autococker, then it sprinkles down to threads like: Impulse/Ion, Angel, Automag (not technically threads), and I think phantom uses its own as well. Knowing which barrel fits is best knowing what thread it is versus what thread your gun is.
Like I said before, used is your friend in paintball, I really like working with ebay and places like trademygun.com, armorypaintball.com, and Baccipaintball.com. For a bit of light reading tippmann does offer its own forum with some of the best info available, not sure what kind of support you can get for VL though I've never tried.
As for phones I'm in Massachusetts so it might be a bit rough, but I pop on and off here frequently these days.
Also, fyi if you've been hearing about a lot of guns I'd like to take a moment to talk physics. I will relate this to a barrel later.
When you check the speed your marker fires a paintball (fieldspeed as determined by a chronograph or "chrono") you are measuring the instant velocity of a paintball as it is exiting the tip of your barrel. No matter what barrel you use that ball is going to have X velocity (usually 280fps). Some barrels will tell you that it makes your ball shoot faster (specifically the flatline). While this does indeed hold true you need to remember that you only have a certain amount of kinetic force behind a ball generated by your initial FPS that causes that ball to break. Gaining extra distance does not matter if the ball doesn't break, and therefore the flatline does not give you "extra range" but rather less drop off at the same distance of travel. So while a non flatline might drop 1" at X feet a flatline may have dropped only .5". This may or may not matter for your playstyle but does bear some consideration and thought if looking at a flatline system.