The Incra V-27 is the low end of the Incra line and well worth the money. It's better than any miter gage that comes with a new machine. I have had one for 6 or more years and love it. I recently upgraded to the 1000 HD and use them both. Incra MITERV27 Miter V27 Miter Gauge - Amazon.com
I agree on the v27. I bought one last year and I absolutely love it. Paid about $40 new from local shop. Very true once it's setup properly. I bought the 1000HD a few months ago but it's still in the box.
I had to wait about a month for a replacement miter gauge for my R4512. In that time, I purchased the Kreg precision miter gauge to use temporarily. A super nice piece of equipment, but couldn't justify keeping once I got my replacement. Now, if I didn't have one at all, then yes, I would've kept it. Might be out of your price range though.
A forum community dedicated to professional woodworkers and enthusiasts. Come join the discussion about shop safety, wood, carpentry, lumber, finishing, tools, machinery, woodworking related topics, styles, scales, reviews, accessories, classifieds, and more!