[MapProxy] Mapproxy + Mapserver reprojections projections

[Paul Norman]

I have a setup with mapproxy serving imagery from geotiffs using MapServer.
Mapproxy serves up tiles. To do this I have to reproject the geotiffs from
UTM 10N to Google Mercator. I can do this in either mapproxy or mapserver.

I'm wondering which would be best for both quality and speed.

I am serving the images as RGBA PNGs, resampled with bicubic resampling in
mapserver.