If the problem is CA then you can sort that out with most photo programs which have some lens correction.

Well i'm just back from Gare Du Nord.
Very nice concert and i had permission to take my camera.
First shot with the DA*50-135 at a tribune on the side (eye level) and later sat on the edge of the podium with the DA*16-50.

Shot around 200 photos in raw so will upload 8 to 10 shots here tomorrow when i've processed them.

Next week is the next concert, its with Lordi.
Still need to ask if i can bring my camera...

Not fully true.
The shooting is the same but there is a difference how the program renders a RAW file compared to the camera.
If you would have nailed the photo in jpg then there is little to nothing you need to do with RAW, i believe you meant that.
Still i love to try to make good photo's even better, i think PP is just as important then the time behind the camera.

I'm shooting in RAW and manually, that way it's easier to batch process

The tamron is highly respected on the dutch forum, they also use it often as portrait lens.
On this forum the sigma seems more popular, dont really know where the difference lies in.

I use the AF to move the AF over big distances (I'm lazy) and the final adjustments are made MF and/or by moving your body.

I don't value AF too high for macro, the placing off focus is quite critical and not something the AF is designed to do.

No need to use the lever you can just use the clutch.
The only problem might be is that you need to have focus confirmation for the camera to release but you can adjust that behaviour in the menu.

Because you said the curve blades are the major selling points and i'm sorry to say i can't agree with that since i think the curve blades doesn't make it so much different than the DFA100 but i believe the build quality really sets it apart from it and from other Macro lenses.

You said you didn't find build quality that important as long as it's above a certain standard, that's great for you and therefore see no reason to discuss it.
We all have right to have an opinion.

These are the kind of photos you get with longer shutters.
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I would set the camera on Manual so you've control over most settings and set the flash on P-TTL.
This way you have full control over the ambient and the flash does all the work to light (freeze) your subjects.

30MB/s is quite fast and your device that use the SD card do need to support those speeds, many just don't have the capability to use it fully.

The class rating is done by the SD Association, they define it.
It's the minimum sustained write speeds for a card.
Class 6 means 6MB/s or more
Class 10 = 10MB/s or more

For a long time there was only class 2, 4 & 6 so the even the fastest cards couldn't get class 10 because it wasn't there, that's why i find the class rating not so useful though.

Also there is a new class out now, the UHS-I it's not really a new class but those card and card readers are the new and upgraded versions.
They support up to 25MB/s minimum sustain write speed maximum is near the 104MB/s.
I'm talking about the support thought the UHS-I cards doesn't need to be that fast.

Have you actually hold the lens?
They said they improve the feel of the manual focus ring quite a bit.

The only concern is that you want to use the lens also for normal photography, then it might be handy if you've a limiter on the lens for the AF.
The DFA does have quick-shift though and that does even things out a bit since when you see the lens over-shoot you can stop the AF and manual focus back and most of the time it snaps on the subject then.

You actually might want to move the AF away from the shutter-release so that the AF only works when you press the AF button. That way you can let the AF do the work of moving the focus and you can make the final adjustments, this how i use all of my lenses most of the time.

Tim I didn't said you mention it.
I only said that the cruve blades are over-hyped that they made the bokeh so much better while it actually hardly does make a difference to the background blur.
If you find that offensive than i find that a bit strange.

The rest what you and i said about build quality and image quality is completely personal so no need to agree or disagree.