I have built both Chambers parts set & Dunlap parts sets. The castings on the Chambers set are the best castings I have seen to date from Anyone. They will be slightly be a tad cleaner castings than Dunlaps. I am Not cutting Dunlaps, but his castings will be the same as Tracks, Pecatonica, MBS, etc. Chambers has his castings cast for him.......
The Chambers parts sets will be more PC than Dunlaps, if that is a concern, as Jim is very PC oriented. The Chambers stock will be cut Very close to finished cut & closer than Dunlaps. That is a part I personally don't like as it leaves me no varibles, but is good for some. Dunlaps is considerably cheaper & a better wood grade for less money, IF you don't mind doing a little more work to the stock & some extra filing on the brass. Dunlaps is a wood dealer & he has thousands of blanks, he doesn't have to buy the blank & ship it & etc., he has it. He is one of the largest stock dealers in the USA. So he has allot less in the cost of the blank & can sell you it cheaper.
I have built both & had good success with parts sets from both. :thumbsup:
You may want to give Tip Curtis a call as well. His stocks will take a little more handywork but his parts sets are good & I have built quite a few of them as well. (615) 654-4445
But if wood grade for the $ is a real concern, you don't beat Wayne Dunlap. He is in on the ground floor there.