Bob - I have never used anything but MAS epoxy, supplied by Newfound Woodworks. MAS has a slow hardener that is exceptional for wet out, giving the epoxy a good long time to "soak in" before it sets up. There is NO blush with MAS slow hardener - I have never washed a coat before putting on the next. They also have a fast hardener that I don't use straight - it does blush at full strength, but cures hard and fast. No good for fill coats, but makes a good quick setting glue. For fill coats, I use MAS slow with 25% fast added, being sure to get the proper overall 2:1 ratio. With this mix, there is also no blush.

Be sure to get back here if you have any more questions. Good luck building!