I'm finishing up 4 of this batch, trying to get them finished and played a bit before the WinterGrass festival in Bellevue, Washington at the end of February. Two with sitka spruce tops and two with redwood. The redwood tops are from one piece of wood, one with "f" holes and the other with an oval hole. These two instruments are matched pretty closely so we can compare these two styles of mandolin. Of course the oval has a different bracing, with an X brace. We'll see how they sound.
Update: We are having a great time at Wintergrass 2014. At the last minute, John Bear showed up and he and Ren helped me get three mandolins ready for the weekend. I brought one with a sitka top and two redwood topped mandolins. One with "f" holes and one with an oval hole, both redwood tops cut from the same piece of wood. The last one was strung up right in the booth on Thursday night and all are settling in nicely. It's has been so dramatic how much they change in those first few hours of playing. I love being able to sit back and listen to my instruments being played by all these very different players. I can really hear how each instrument and wood type projects out into the room.