Best Planetary 4" refractor?

Forgive me...I did a forum search but I couldn't find this direct topic anywhere. Opinions please on the best 4" Apo for planetary viewing. Visual only, binoviewer. To me there would be a difference in the non-baffled short focal ratio TV's vs. the fully baffled longer focus Tak's, SV's for the finest planetary details. Support your choice with examples/comparisons please, thank you in advance.

Tele Vue's TV102 is f/8.6

Ron

APM makes a mighty fine APO from the
TMB 100 F8 triplet. I believe the TV102 is a doublet.

Nikon 4" F/12, Showa 4" F/10 and Takahashi FC-100N F/10. All are hard to locate and the Nikon is very expensive.

You say the doublets give better contrast than the triplets? Don't the doublets have more CA? Would this not make for worse contrast?

I understand that the more surfaces you have, the worse the contrast, but doesn't CA complicate the analysis?

Every scope regardless of aperture will show something when it comes to planets, if you expect some serious detail the minimum aperture for a refractor is 5", the 4" simply does not have the resolution needed for the "finest planetary detil", and will run out of light at higher powers when combined with a binoviewer.

Thanks,
Vahe