Valken carries only two vests, ECHO and TANGO. Click the link in my sig to get there.
If you are strapped for cash the ECHO is a great vest for the price. Fits and feels like a xball harness but with the added molle on the shoulder straps for some custimization. $50!!!
the TANGO is a "build it yourself" style vest. Very well put together, room for a camelback, tons of molle pouches to make the right fit for your play style. A bit on the expensive side, however. The vest alone is $70, and after you buy all your pouches you are likely looking at closer to $130.
One of the first vests I owned when starting out in Scenario paintball was the UTG tactical vest
. Comes with everything you need to get right into the game, available in six different patterns, and for $40-$50 online you CANNOT beat the price anywhere. The pouches on the front are unfortunately not removeable, but the back is entirely MOLLE straps.
Hope this helps!