Yes, another buffer question

[Bucksears]

Sorry, have to ask and the search I ran on the forums were specific to particular builds.
My query is more general: as most of my pedals are DIY and true-bypass, I'd like to incorporate buffers in some, if not half, of them (maybe alternating buffered-->true BP --> buffered, etc). What is a good clear/clean/transparent buffer that can be added when an effect is bypassed?

Simple JFET Buffer (SMD or IC)?
C-buffer?
Kliche Buffer?

Thanks!

 

[JTEX]

My favorite clean buffer is an OPA205 op amp wired as unity gain noninverting. Noise is as low as it needs to be for guitar (any lower would not make a real difference), while remarkably low power, and great with high Z sources.
The only way it could be improved is if it were rail-to-rail input capable (the output does swing rail-to-rail).

I've also used OPA196 where noise was somewhat less critical (bass). It's about on par with TL071 for noise, but rail-to-rail in and out, and far lower power. And its output is beefy enough to drive headphones directly if need be (not very hi-fi for this use, mind you).

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