Lexapro first. Paxil is a more aggressive SSRI than Lexapro. It's hard to come off Paxil so I would start with Lexapro.
M4
We all react differently to these drugs, and while one may have side effects from one drug, another won't. It's really trial and error as to what will work best for you. Try the Paxil and if it doesn't help, or you have any problematic side effects let your doctor know right away. Never stop these types of meds abruptly and always work closely with your doctor where your meds are concerned.