Yeah I love the Takumars.
As you say, some of them are dogs, the 35/3.5 is great for daytime stuff, but woeful for astro.
But some are real gems too. I haven't got a copy of the 35/2 yet but from all reports it's a winner. Same for the SMC Takumar 135/2.5 (v2).
My 55/1.8 is sharp as a tack, but then it's the 35mm version, not the 6x7.
The 55/2 tho is a different beast, no where near as good.
I have one thorium lens, the Takumar 50/1.4, I'm not worried tho
