This page has the assets for current MacTech Pro logos and banners in a variety of sizes.
Logos
There are two types of logos — with outline/halo and without. The first one in each row is the “without” version. The second one is the “with” outline version (which is why it appears to be slightly smaller when displayed on a white background. Note: black background is not part of graphic — it’s only shown to show the halo.)
Here are the different sizes.
100 wide: 
125 wide: 
150 wide: 
200 wide: 
250 wide: 
350 wide: 
500 wide: 
Banners
The below jpg’s should point to /
300×200 : 
300×250 : 
336×280 : 
480×060 : 
728×090 : 