VTEC_EATER has published a detailed and comprehensive review of the Radiopopper JrX Studio series, a set of flash triggers which offer remote power capabilities, on Flickr.
…The Radiopopper JrX Studio system offers 85% of the functions that Nikon’s CLS has but can allow you the freedom of greater range, greater flexibility (not only in your lighting options but in your ability to work around your subject), and does this all with a cheaper price tag…