More than last year, 2012's ultrabooks have been and will continue to be about tradeoffs: low-res screens vs. high-res, TN panels vs. IPS, snappy SSDs vs. capacious HDDs, dual-core CPUs vs. quad-core, 2GB vs. 8GB, power-sipping IGPs vs. muscle-bound GPUs, mainstream vs. premium pricing, and so on.

Acer's new TimelineU makes its own compromises. Our review unit touts a full-size backlit keyboard, 500GB of storage, a GeForce GT 640M LE GPU, an optical drive, an eight-hour battery life and an attractive $830 price tag. Naturally, the question is: what's the catch? Let's get to the bottom of that.