Having a USB to HDMI or VGA adaptor is really useful too. you can get an extra output or if their onboard doesn't work you can pop it in and it works 100% of the time 75% of the time
I can agree with this sentiment, lol.
I prefer StarTech for my adapters/converters simply because they already OEM many of the units already out there.
Active display adapters (vs Passive) are your friend, particularly with tablets & ultrabooks that won’t output to an external display unless connected to a PSU. I know the Surface tablets suffer from needing them to work at all as a presentation device...