I agree with Dave, 5128 looks fantastic!! You've definitely taken a better M83 before, but given the conditions, its a good shot...
Have you ever considered taking all your M83 subs that you've taken and doing a stack of upwards of 1000 frames? Might be worth exploring as you've no doubt got heaps of data lying about if you save it all like I do...
Keep them coming mate!
Alex.