Just wanted to do a quick comparison between a Spire 3 and a Bunkerkings CTRL Paintball loader. I ended up finding out the Bunker kings CTRL loader holds just about the same amount of paint that a Spire 3 does and the CTRL loader is a few onces lighter than that Spire 3. Both paintball hoppers are great loaders, the Bunkerkings CTRL loader is a little bit more low profile than the Virtue Spire III. You are able to use the Virtue N-Charge kit on both loaders as well as the same speedfeeds you could use on the Spire III or eve the Virtue Spire IR.