has the still-elusive Canon EF 300mm f/2.8 L IS II USM Lens
and Canon EF 400mm f/2.8 L IS II USM Lens
in stock at this moment.
They are not cheap, but they are razor sharp. I used the Canon EF 300mm f/2.8 L IS II USM Lens
with the Canon EF 2x III Extender
as a lightweight bird photography lens in Florida last week. The results are quite impressive.