I don't put much faith in the color difference. I have two 174s, one Stormtrooper and one in the same color you have (albiet with the Skullboy/ZAM stamp) and they both fly the same for me. Mine are more similiar to a Volt than the Amp is, but I wouldn't say it's like the Volt. I don't have a ton of power, but my Shocks had much more turn than my Volts. They also had a lot harder fade...they tended to get much less forward penetration once they began their fade. My Shocks are MONEY in a tailwind....glide for days and not quite so much turn, but still a reliable fade. My Volts fly exactly the same in any moderate wind.
But hey, different strokes for different folks, you know? I hate the Amp...you love the Amp...if I had any Amps left I'd suggest a one-for-one swap for that Shock you hate and I love LOL