@StrawBunyan stay tuned, I just aquired a J2 from my brother @Theo . Haven't had time to really put it through it's paces yet versus my GB6HM, but I'll let you know what I think later.
a J2HM could be a lot of fun - buy 2, send them to me, I will do the HM and send you one back! because I'm such a nice guy, I'd even be willing to pay the return shipping!