Sure they're reputable BPOTeam - if you call being owned by Select Portfolio Servicing reputable.
I'd guess that most of the listings coming out of RRReview are from CSFB, SPS, ABSC, etc. as CSFB owns both SPS and ABSC. And unless they moved RRReview when SPS shut down the office, they're located in Hatboro, PA.
Incidentally, my litigation against SPS, PMI, Merrill, LaSalle and Harmon Law Offices has progressed to a RICO action in federal court. I may even get around to naming RRReview depending on where discovery takes us...
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All you have to lose - is your home.