Yeah looks pretty good to me too
looks like you've got your polar alignment and tracking nailed!
Like Brent says, it needs more data... galaxies are faint because they're very very far away. Even the bright ones. The more data you gather, the more you'll reduce the noise and consequently the more you'll be able to stretch the levels and curves to bring out the faint parts without highlighting the noise too much.
The key is down to experimentation. Once you get the hang of it, you'll only need to take one sub to get an idea of what settings you can get away with. Ultimately, your goal is to collect as much signal as possible with as little noise as possible. It's a challenge
Oh and if you want another experiment, take the reducer out of your optical train and take a couple of subs at f/10 and see how the focal ratio affects the signal you collect.
I use a 1100D and find I can get away with ISO 1600 when the weather is cooler, like below 10C. I find it the best signal-to-noise spot for my camera. When it's warmer, I reduce the exposure length to keep the noise down, although to be fair I haven't had much success this summer
Also, take a look at the other threads in this section about stacking, how many subs, etc, as it's interesting reading.