Hi Kelli;
personally I think byVisa.com from Bill is a great one, and a steal at $120 and your best deal -- but I say this without knowing exactly what your client is seeking, of course. If you want some alternatives, here goes:
immigrationPal.com
visaZilla.com
visaUser.com -- this, and the 'zilla above, are prob the strongest ones.
visaNeeder.com
girlVisas.com
boyVisas.com
immigrationFile.com
visaGrab.com
visaParty.com