Ask Engadget: best non-SSD laptop hard drive?

We know you've got questions, and if you're brave enough to ask the world for answers, here's the outlet to do so. This week's Ask Engadget question is coming to us from Jason, who needs a laptop drive upgrade that doesn't involve the words "solid state." Or "really expensive." If you're looking to send in an inquiry of your own, drop us a line at ask [at] engadget [dawt] com.

"I am in the market for a 2.5-inch notebook drive for my new Core i7 MacBook Pro. The biggest concern for me is performance, with storage after that, and impact on battery life last. Every SSD I have seen is over my budget. I am wondering which hard drive will be the best non-solid state drive to fit in a MBP. Some people mentioned Seagate's Momentus XT, which is a hybrid drive -- are they any good? Thanks!"

One thing Jason left out was his capacity requirements and actual budget, but we'll go ahead and assume he wants something larger than 40GB and cheaper than the average SSD. Any blazing HDDs out there for the taking? Go on, it's not like giving up your secret will make everyone reading this go buy up the remaining inventory. No promises on that, though.