I've been talking with Pantanaenius recently, and I've really come to see that they all cost around the same when you normalize their coverage.
The problem that I've been having is due to a US tax act that requires all foreign companies to report accounts of US citizens. Since this introduces a lot of overhead, they will often just say "nope, not gonna deal with this."
These are the 4 underwriters to my qoute btw.
ACE European Group Ltd. Direktion für Deutschland (25,00%)
Allianz Global Corporate & Specialty SE Niederlassung Hamburg (25,00%)
AIG
Europe Ltd. Filialdirektion Hamburg (25,00%)
R + V Allgemeine Versicherungs AG (25,00%)