I've got many LED lights and the one I use the most these days is the cheap "River Rock 1/2 watt 2-AAA" from Target. $9.95 normally, I found one on sale for $7.95 once.
It depends on what you mean by "really bright". A 1/2 watt is easily bright enough for all the normal household chores I do. You can get 3 watters and 5 watters, but probably not for your under $30 price point. The new MagLites that come with LED's are 3 watts I think (I don't have one). They're reportedly pretty good, and I think they're just a bit over $30 ($35 maybe?) That's for the MagLite branded LED. There are many other conversion LED manufacturers. Some good, some not so good.
I would get a combination myself. Maybe that River Rock 1/2 watter for the everyday needs, and a Princton Tec TEC40 4AA incandescant for when you want something brighter with throw. Those TEC40's are cheap and very bright. Small. Pretty durable for a non-LED light too. If you shop around for sales you can probably pick up BOTH of these lights for a grand total of $20.
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