parts.com.
From my experience, the lexus parts will just get fulfilled by pembroke pines anyway. however, there maybe the occasional part (e.g. toyota ATF, LLC, filter) that will get fulfilled for a few cents cheaper from other dealer.
Plus you can potentially save on shipping if you need to order a batch of parts for a mix of lexus/non-lexus cars. So nothing to lose to use use parts.com over the direct trademotion link in my opinion.

 

I've purchased parts from Swell for my family in the past and have been very happy with the low price and fast delivery...Carson seems to be a place where alot of ppl buy from too.

 

The parts I ordered off that site work excellent, no problems. I ordered the oxygen sensors and a set of front struts and the car runs like new now.

Here's the work I just put into it:

Oil Change
Radiator Flush
Turned the rotors
New Brake Pads
Oxygen sensors
Front Struts

I almost forgot how fun it is to drive my car I havent had it in 2 months because of the O2 problem