The Leo Triplet, comprising M65, M66, and NGC 3628, is such a beautiful group of galaxies. Each one is oriented in interesting ways, allowing you to see different structure. NGC 3627 is also distinctly more blue than the other two. I wonder if the blue is related to the galaxy's stage of evolution, or relative motion.
I used a Celestron Edge HD 925 with a 0.7 reducer, an ASI 2600MC Pro. I managed to get 15 hrs total exposure time, with 180 x 300s subs. I processed it in SiriL, Starnet, GIMP & G'MIC.