TTE exhaust

[Bossworld]

What do you want to achieve with a muffler swap?

Better sound? Go TTE.
Better flow? Don´t go TTE.
Better looks? Pick you choice.

Quieter on the motorway if possible, and to see if generally slightly quieter.  Hasten to add that it's not as if the TTE is a thunderous beast, and I do like the tone of it, but searching through posts on here, suggests TTE get louder as they age. 

[Petrus]

but searching through posts on here, suggests TTE get louder as they age. 

Looking at the inside, that seems pretty well proven.

The choices seem straight forward, depending on the resp. weights of the individual priorities, preferences and budget.
If the latter is no issue p.e. there are wonderful sounding, none too loud, good flowing resonated ones in titanium available in Japan.

[Petrus]

Does Fox have a better flow?

No idea.

And does that even matter if the midpipe is stock?

Not all thát much but the OEM cat seems to flow not bad, better than the TTE.
But hey, again it is just waht your aim is.

I don't want to lie under the car and screw around with changing the pipe every time i go to MOT, the last time I changed it was a bloody PITA, I don't want to go through that on a regular basis.

As I wrote priorities and their respective weights.

There is no absolute ´best´ in it other than that OEM is the best compromise and top notch quality; any improvement in one aspect costs more than that in other areas.
The TTE is a perfect example. It flows worse, is worse quality, costs more, looks and sounds better.

Mine flows like a sea-lion on a soapy water slide, but has no cat and mán is it noisy.

Pick your poison. There is no best.

[Call the midlife!]

One thing I can say about the Fox for certain is it's heavier than the standard exhaust, the extra tip alone weighs 2kgs but they're twin skinned, my oval ones are at least.