Camelbak or Platypus products work well for most of us. Knockoff bladders tend to leak or worse, they'll work fine for awhile, until one day they suddenly burst all over everything. Which could be dangerous in summer, if that's all the water you have.
This is for anyone on a budget, not aimed at anyone in particular:
If you want to save money, don't use a hydration bladder. Get a used school backpack, such as an old Jansport, (thrift stores, etc.) and buy a couple of 1 or 2 liter Arrowhead waterbottles at the grocery store, carry those inside the pack. They'll last quite a few trips. I'm serious here. I hate to see potential hikers who are on a budget worrying about the latest yuppie gear. It simply is not necessary. If you think you are going out there to impress other people or have a certain fashionable appearance, you really need to get over yourself. You need a hat? You probably have a ball cap. You need snacks but Grizzly Bars cost 4 bucks? Go with Nature Valley granola bars instead, or make cookies at home, and bring fruit, leftovers, sandwiches, etc. You can't afford the latest hi-tech boots or trail shoes? Wear sneakers. You can't afford Leki hiking poles? Break off an agave or pick up a rib from a dead saguaro. You can't afford The North Face hi tech fabric shirt and shorts? But you do have a t-shirt and exercise shorts, so wear those. You can't afford $25 Smartwool socks? But you do have socks in your drawer, so wear those. You don't have a car? Hike close to home, ride the bus or old bike to an urban park trailhead. (Watch out for your good bike at the trailhead, though!)
There is a point of no return unremarked at the time in most lives. Graham Greene The Comedians
Steal your face right off your head!