DVI:

I have had both planes, They are not equal.

Extra 300 is a mid wing that loves to fly, it has the same stall speed as a LT-40, 17 MPH, according to RCM articule 3 or 4 yrs ago! it´s only big faulty is the landing gear that You can replace for and aluminun one, also You should change the wing sheeting for 1/8 and also build a hatch under the tank.

Ultimate is a different animal, does better aerobatics in general, loves knife edges you name it..., thougher to land too, it has the same building tips as the extra.

If You are an intermedia flyer, the joy of flying the extra is max, if you wish to challenge yourself to the next level the Ulty is the ticket.

The set up on the extra is OS 120 4-s don´t recall the last prop used, on the Ultimate is OS 90 2-s 15x6 pro-zinger, perry pump.

Both set ups works fine although I have seen ultimates fly with 90 2-s 13x8 and 14x6, I stll like the 15x6 better.

hope this helps!