Accommodation in the Yasawas

Hi,
My boyfriend & I are headed to Fiji Dec. 30- Jan. 6th and are trying to sort out places to stay. So far, we're planning on staying a couple nights in the Mamanuca Group (Funky Fish maybe?) A couple nights in the Yasawas...we're considering either Waya Lailai Eco Resort or Korovou Eco-Tour Resort. Does anybody have any recommendations between these two or any others? After that we're planning on spending a couple nights at Bekana Garden Island Resort (just off Lautoka) before heading back to Nadi. Any recommendations on places to stay would be appreciated! Also, how easy/cheap is it to get between the islands? Thanks in advance :-)