As long as the pedals don't fail (spindle bend/break, cage or body fall apart) then there is really not a whole lot of performance to be gained or lost between different pedals. The cheapest of the cheap pedals - plastic cages and/or bodies are often the worst as these are made purely for cost-cutting and have cheap soft spindles that are likely to bend, bearings that are either rough and tight or loose and grindy, and the plastic structural materials will come apart under any hard use. . Anything with metal body AND cage is likely to be acceptable. Some may need bearing adjustments to be considered 'good.' The price of a good set of pedals starts around $20 or so.