Anything cheaper than a SP3 i3 model. So like under $800??
You definitely have a wide variety of options to choose from.
In the 8-inch tablet range, there are quite a lot, typically from ~$200-300 or so and from a variety of manufacturers.
Under the hood, this current generation (dubbed Bay Trail) is the same for the most part, but there's smaller differences between models. ASUS has one with a Wacom digitizer, Dell's Venue 8 Pro can often be found for less and has a proprietary active stylus, and so on.
In the larger full-size iPad, Surface area, I recommend taking a look at the Dell Venue 11 Pro for the most part, which I hold as the most versatile with a swappable battery and various accessories (laptop kb dock, slim kb, desktop dock, etc.) and configurations. (choice of Atom, to a top end Core i7, which might bump up against that $800 ceiling)
If on a budget, the ASUS Transformer T100 has a claim to fame for including a laptop-style keyboard dock in the $300 price tag.
There are some last gen tablets around (thinking of last gen Atoms like the Latitude 10, ThinkPad Tablet 2 - could be wrong on that), but I might hold off on them unless the sheer utility, design, and price outweighs the lesser performance of last gen Clover Trail Atom processors.