1.4 TC II vs III on 200mm f2.0

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Dan
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I have the 1.4x TC II, and I like the added reach it gives me for my street photography - but I'm not keen on the drop in IQ

I found this

http://www.slrgear.com/articles/canon_tc/canon_tc.htm

The 200mm ƒ/2.8 II USM lens produced very little chromatic aberration, making it an excellent base to test what happens when an Extender is added. This is a case where there is a notable difference between the version II and III Extenders. The version II 1.4x Extender produced substantial chromatic aberration both in the corners and throughout the image; the version III 1.4x Extender isn't much different than the lens itself.

I wonder if anyone can offer advice on whether getting a version III will give me better results?
 
With the TC I get 1.4x headstart :D

Just ordered the mark III - better quickly sell my mark II - my bank balance is groaning
 
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