Help choosing best PI chip for LED driver

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I've taken an in-depth look at what PI has to offer for LED drivers and am somewhat overwhelmed by all of the options. 


What I'm looking for is a topology that will drive a Cree CXA1512 or similar (40V, 350mA, ~12W) by constant current. 


I'd like the design to be as bare-bones (low component count) as possible. High efficiency or PFC is not required. Good response to TRIAC dimming is a must. If it requires a transformer or other magnetics, I need them to be cheap (<$50) in small quantites. Small footprint is also a priority.


Would anyone be able to recommend a PI technology?

Thanks in advance! 




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