Originally posted by locole
Is their any advantages of one type over another?
What are my options?
Is feel the only difference?
I see a lot of pedals say SPD compatible is this the best type or the basic entry level type?
First of all, the word you want is "there," which is a pronoun, not "their," which is an adjective; secondly, "advantages" is plural, so you must employ the third person plural present indicative "are," rather than the third person singular present indicative "is."
Are there advantages? Yes. It would be useful to know, however, whether you mean road or MTB clipless pedal systems. Those two systems have relative advantages and disadvantages, and within each category, there are numerous variations, each with their advantages and disadvantages.
Your options break down thus:
Road:
Look
Time
Shimano
Speedplay
Egg Beaters
MTB:
Shimano SPD
SPD clones (Ritchey, Wellgo)
Time ATAC
Speedplay Frogs
Egg Beaters
There are other variations, but these are the most common. Each system does have a different feel.