I'm on my second AccelHobby.com plane too. I have the white Katana GS 40. (I also got a Saito 100 for Christmas.)

I love the Ultimate (had a few different ones), but Bipes are different. Not harder or worse, just different. I watched Mike's video, and the 10-300 looks great, and I'll probably build one someday, but look at how the inverted harrier is. As the plane nears a 45 degree angle, it drops off. That is the stigma of bipes and 3D. As the AOA reaches 45 degrees inverted, the top wing completely washes out the lower wing. The only way to stop this is to change the stagger or spacing. That is why the Tensor is so good. Proportionally, the spacing is massive, and no stagger to speak of. Maybe OMP will get us a built up Tensor to try out. For great 3D, monoplanes are easier to learn on.

Also, a deadstick can be a challenge on a bipe. The drag of the top wing can cause it to drop out of the sky as airspeed falls off quick. I'm not saying that the OMP does this, but a dead bipe can be a challenge. Maybe someone flying one could let us know how it acts when dead.

For $199, the Kat 70 will be hard to beat for a Saito 100. I'm on the waiting list. The "Slow Boat From China" is said to be within 2 weeks of harbor. I'm gonna slap the 100 on the test stand and git-r-ready!

If you have a 46 size 2 stroke or 70 size 4 stroke available, the Burrito builds in a flash, and is as solid as a 3D trainer gets. That is, unless you really want an ARF.

Let us all know what you decide!