I have a shaper that I got from my uncle quite a while back but actually haven't used it much. Its an older Craftsman with the 1/2" spindle. I have been doing some cabinet work lately and I have been using a set of 1/2" shank cabinet door bit set for my router that I use in my router table. However I have issues with inconsistent cuts from time to time due to some flexing.

I've been thinking about picking up a rail and stile set for the shaper and try it. Has anyone had much experience in the reversible sets? The two cutter sets seem to be pretty much out of my price range(several hundreds of $) given the little I am going to use it. When I got the shaper I got the usual set of steel cutters and a Bosch raised panel Ogee cutter, so all I really need is the rail and stiles and I'd be set.