I don't do much work acoustically, it's 99% synth-to-desk but I do have a number of songs I've written and recently I've been collaborating with a fellow forumite who has done some really nice vocal stuff which has lifted my awareness of how enjoyable it is (and how much it improves a piece of work) to record something involving vocals. He's been sending me WAVs and I've been working with them here.
My home studio has zero acoustic treatment. It's actually a converted within-the-house single garage (converted before I bought the house), and is about 6 x.2.5 meters in size with an 8-foot-ish ceiling.
My monitors are placed at one of the 'thin' ends, facing down the length of the room. Although I have no acoustic treatment, it's a relatively small space and I have a number of synthesizers on various double and A-frame stands around the periphery. Above them are shelves (which I built myself, and are heavily compartmentalised), most of one of the long walls is all but covered in them, as is the end opposite the monitors and I have all the knick-knackery associated with a home studio in those shelves - books, ornaments, CDs, heaphones, manuals, chargers etc. so the room is anything but echo-y.
It's not an acoustic environment, and I can't sing but I have done placeholder vox for other folks to work against. I've used an SM58-like mic as well as a Rodes NT-1000 and the results from the Rodes are markedly better than the other one.
Given that one mic is obviously better than the other, even in this environment, I was wondering if there's any wisdom to be gleaned from those of you in the know about mics that might produce better results than the NT-1000 in here. This might be a 'how long is a piece of string' question, but given that acoustic treatment is not hugely practical in here other than on the ceiling (which would be an option) I was just curious on any thoughts that might be of use to me.
I've snapped a couple of pics on my phone of the room as it is now. It's dark, the walls are painted black, my phone is very old and half my bulbs don't work so the pics are rubbish but I think it should convey a sense of the space if it helps. These are of each end of the room looking the other way.
I should possibly add that the white surface behind the monitors is a double-glazed window (permanently) covered with a blind.

