There's quite a few out there but you need to take into account how you want to use it and what connectivity features you will need. If you're going with wifi only you're in luck with a lower price tablet. I would go with a good known brand such as LG, Samsung, Apple etc. They all make reliable products and with the latest processors you will be able to do all your work without any lagging.
Google's tablet range will have the advantage that you will get the OS update super quick and that goes for Apple iPads as well. Kindle Fire is excellent if you're very much tied to the Amazon ecosystem otherwise any Android or iOS table will meet your needs now-adays and could be had for less than around $350.