spyVspy, the surround of the cast drivers has a different look. If you have your Grills off, this part will be seen. As far as cooling.. My M60's get up to about 500W each, and i have never had any issue them with not being able to handel that power.. Unless your a HUGE amp, due to the impedance of these speakers not going below 6ohms, cooling shouldn't be an issue. My amp is stable to 2ohms @ 1200W, but that doesn't matter due to the lowest impedance of these speakers being no where near 2ohms.
At the end of the day, it's what makes you happy. That's all that really matters. This is a hobby after all
