[PHP] Which query is more correct?

[LAMP]

Hi,
I need to pull all records from the table Registrants they are NOT in 
the table ToBeRecleared

Registrants.Reg_ID is PK
ToBeRecleared.tbrc_Reg_ID is PK

Which query is more correct?

SELECT r.*
FROM registrants r
where r.reg_status=1 AND r.reg_id NOT IN (SELECT tbrc_reg_id FROM 
toberecleared)


SELECT r.*
FROM registrants r
where r.reg_status=1 AND (SELECT count(*) FROM toberecleared where 
tbrc_reg_id=r.reg_id) = 0

I checked explain of bot queries - but can't "read" them.  :-)

Thanks,
L

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