I do not have any time with an Eagle, but I do have a Z230.

1. They are heavy, the Z230 come in at a little over 12lbs.
2. They "Feel" heavy when you fly them, it is hard to describe, but you do notice it.
3. The engine is a little different to get right. You need to follow Bill Meadors setup instructions to the letter. He knows what he is doing, and once done correctly it will run great. I have compiled a lot of infor on engine setup on my web site
Z230 Info
It shows how I went with Bills setup on my gasser.
4. I have only about 4 gallons through mine so it is still breaking in and the engine is still developing more power as I go.
5. Runs on pump gas which is really really cheap compared to the glo fuel
6. The Z230 is almost exactly like the Sport 60 which I have flow for several years, they share alomost 95% of the same parts, the Z230 is wider, and uses bearings in every control. But it has not yet flow like my Sport 60 with the YS61ST2 in it. The sport 60 is just quicker. the top speed seems to be almost the same, but the Z230 take a little longer to get there. It carries its weight pretty well, and could benifit from longer blades.
7. The sound of the engine is quite different. they do not scream such high rpm's like the glow ones do, so it takes a little getting used to hearing such a low engine and rotor rpm while flying.
8. As far as I have seen they are all pull start. Which is pretty nice. No field equipment needed besides the fuel. No glow starter, no starter,no start shafts. Just gas and pull. Mine starts on the second pull almost every time, even with no choke.

I do like my Z230, but I am just taking it realy slow right now. I have not done any loops yet. Just basic circuits and some stall turns so far. I am following Bill's advice and taking it slow to let the engine break in properly.

I have seen a nice pipe for the Z230 that I may switch to in the future for more power. The gassers in my opinion are perfect for a scale fuse.