A few questions,

I am looking at these motor/plane combos

Eflite 480: for the eflite extra 260

Eflite 10: For the new ultimate that is coming out

Eflite 25: For either an eratix or a pitts.....

How 3D is the pitts? or is it more sport flying? and is the 25 too much for it.
If I use the 25 should I have a 3 or 4 cell battery?

How do these planes compare? And which motor is the motor with the most airframe options for it?

firstly you may want to look into buying the Scorpion motors and ESC,s . they are both cheaper and better than the E-FLIGHT brand. i have the E-Flight Extra 260 and use the Scorpion 3008-32 outrunner with matching 35 amp ESC running 11.1 volt 2200 mah lipo and the apc 11 x 5.5 e prop, great combination . Scorpion have a great variety of different sized motors and esc,s so have a look at there web site for more info. good stuff.

I have the Eratix and flew it TODAY it is an awsume flying plane and 3D is pretty easy with it. The 25 is plenty power and it hovers about 3/4 throttle with plenty pull out from there. Mine flys hands off inverted and all done to CG is having the battery about an inch in front of wing tube. Also it is a very attractive plane and draws plenty attention as it just floats in for a landing. Very good plane IMO. The battery setup for mine is Two 2100 lipos. I have an adapter that has two male deans on one end and a female on the other your two red wires are soldered to one side of the female and the black wires go to the other side. Makes a Y really and am not sure if this is called running in a series or paralell it makes it 4200- @ 11.1V though. or get a 4200 lipo by itself. I had the 2 2100's so went that way. Good luck but this is an awsume Plane. It's off the ground price will be around 6-7 hundred after motor servos and essentials. I have been thru 2 and now on my 3rd. I would not buy this many if it were not an excellent plane and I get so confident that i think I am Mr. 3D and mess up but not once has the plane let me down just I let it down HARD lol.

PS used motor and all electronics on the rest so was just out the price of plane each time. 149.00 if I remember correctly.