Are you considering shopping hands-on? If so, install onto a USB stick and take it with you to the retailer. Ask them if they mind if you test boot your OS from USB.
SSD: see
http://marc.info/?t=135573327100003&r=1&w=2 and other archived threads
HDMI: see
http://marc.info/?t=134652258500001&r=1&w=2 and other archived threads
"Energy efficient" and "Powerful enough" are neither specifications nor metrics.