Who would you recommend for parking domains?

I was thinking about parking a few domains to earn some $$. I have one that's just a 4 digit NNNN.org & a 3 character LLN.org. Never parked any domains before, but I was thinking about SEDO.

Which companies would you recommend?

Are there any fees involved in parking domains?

 

I got mine parked with SEDO. Perfect service so far. Easy and intuitive admin interface, good rates, regular payment. Paypal option. Multiple templates available for your domains, contextual graphics that increase the click possibility. No fees are taken for parking domains.