There isn't a very large middle ground in the Windows tablet world right now. You frequently have to choose between a budget-oriented, low-spec model and an expensive portable powerhouse. And that's a shame, really. There are no doubt people who want high-resolution screens or lots of options, but don't want to pay for fast processors that may go to waste. That's what makes Lenovo's ThinkPad 10 so appealing at first glance -- it's a well-equipped 10-inch Windows slate that won't hit your wallet too hard. The question is whether or not it strikes that price-to-performance balance as well as it should. It does in some ways, but there are some big sacrifices involved. Read on to see if they'll be worth your while.