I've flown Ugo's Sonic and other than being under powered with a GMS .25, it is a great little plane. Takes off straight, does plenty of acro and lands nicely. With the .25, it won't pull a vertical 8 (one loop on top of the first one). That's the reason I call it slightly under powered.

I liked it so much, I ordered 2 and am making a twin fuselage twin out of the 2 kits. I did the same thing to a World Models Sky Raider Mach II and that is a great twin. From my experience, I would say the twin fuselage configuration is the best one for a twin.

I am using two OS .46LAs in the twin. I weighed them compared to a GMS .32 I have and there is only 1.5 oz difference. Overall, the plane is sort of heavy, as has been mentioned. I am going to cover the details of the construction in the Twins Forum. In case you are wondering why I don't use GMS .32s in the twin, I have used them before. I have 4 total and can barely keep 2 running reliably in a twin. Singly, they are great. Pair them up and they do strange things like quit for no known reason. the Twin Sonic will be my 23rd twin so I do have some experience in this area. OS engines keep running without flddling with them every flight, so I pony up the money and use them. Ugo has a couple of my .32s and I have mentioned he should yank the .25 and drop in a little more power.