I was in the same boat as you. I considered IR, Astro Pneumatic, HF and my use is occasionally to remove rust, paint, cleaning wheel hubs, rotors and brake drums. I went with Astro Pneumatic 202 as it comes with both the straight grinder and angle grinder. The casing is plastic (composite) so we'll see how long it lasts. I had it for about 6 months now and use it at least twice per month.