For your budget, consider the Look Keo 2 Max (around $110 on ebay). They are very light and offer the wide platform interface between pedal and cleat affording more confident balance while pedaling standing-up or sprinting.
The Shimano SPD-SL is also wide, but generally is either heavier for the lower end models or more expensive than the comparably weighted Look model(s). You can't go wrong with either Look Keo 2 Max or Shimano's SPD-SL systems.
Oh, and make sure to get yourself some stiff-soled shoes. Don't skimp there, or you'll be back here asking about numb feet and hot spots, then we'll tell you to go buy higher quality shoes. Look for shoes with carbon soles at a minimum.
In summary, spend a little more now and save yourself the foot agony and upgrade expenditure.

HTH