I've gone through the full progression. First year here I used the button on my touch pad. Worked ok and I played well with it but slow response was death on meter spikes.
Changed to wireless mouse. Had a nice microsoft that worked well until it accidentally slipped from my hand and smashed into a wall at about 65mph. Replaced it with top of the line Logi MX Anywhere Performance mouse ($99) which worked great for everything except this game. Any mouse movement, even slow ones, would cause CPU to spike 10-15%.
Recently got a new system so decided to get a gaming mouse. Went with the Logi G500 ($60-70) which I can't say enough good things about. I can move mouse as fast as I can in circles and cpu might spike 3-4%. Also has a button where I can change DPI on the fly so I can click one button to aim when I need more range, then when time to play my shot I can dial the DPI back and meter seems much more stable in low DPI mode.
If you're serious about a mouse, go with the Logi G series.