Tt really depends on which LFS you intend to get from right? Tt's why I would rather pay more for a healthy, acclimatized fish. Just my preference, sometimes could be due to the handling of fishes that causes the stress or poor conditions at LFS, and I would rather not buy on/ard shipment day. This can actually discourage LFS from having more stringent QC. Of course for the v. rare fishes, can't be helped.
End of the day, if the LFS has good practice, I would rather reserve it first and let the fish settle down. If LFS doesn't have good practice, why are we still supporting them?