I have been considering getting a: chamber all overall lenght guage, bullet comparator and headspace gauge. any thoughts?

I'm not sure if the Stoney point gage will do all of those things; but the RCBS Precision Mic will.

The Stoney Point Over-All Length Gauge will do it all. I use it for overall length, but have not used it in conjuction with the headspace gauges. I bought the straight Overall Length Gauge first and then the curved one (for levers and Semi-autos). The curved one will do all I found out later. Oh well. All the parts and pieces are on pages 10& 11 of the Midway Master catalog #2. I've found it to be a neat set up and really fun to play with , being retired and all (for awhile, according to the wife!) :)