Driver preference I guess. But once again I talked to ZZP yesterday, keep in mind I want a reliable 300hp that lasts and is cheap, they hands down recommend the LNF. With barely and mods you're getting 300 from a stock 2.0 turbo.
They did say that for big numbers and extreme mods the LSJ is better. But those extreme mods carry extreme price tags.
With the LNF I can run it for 100k miles until it croaks, then I can get a high performance crate motor from ZZP for $1900 and do it all over again.
2008-2010 Cobalt SS is what I'm after, but hey the more of you that pursue the supercharged cars over turbo, the cheaper I can score my model!