Bus from KL to Singapore?

Travel Info
I was thinking of getting the first bus out to KL Friday morning, but Aeroline & Airebus' ticketing counter open either 30 minutes after the 1st bus leaves or exactly as the 1st bus leaves. What other bus could I take that I can purchase the ticket right & there and be off as early as 7 or 7:30. If not is there anyway I can purchase the tickets when I arrive in KL?

Any tips would be a great help. Suggestion on other bus line would be great or even trains? I just want to get into Singapore early.

Travel Tips

Try First Coach.
They leave @ 7.30 AM from Bangsar.
I am not sure about purchasing tickets right then and there though. But u can call them at 03-2287 3311 to find out.

Try following this link for a comparison of the various coaches that are Sg bound from KL:

http://www.journeymalaysia.com/ptasingap...
Others

I suggestion take a fly to singapore
you can KTM www.ktm.com.my it depart at night about 10pm and reach Singapore morning about 8am.
there's quite a umber of choices.

Can try Plusline NiCE and Transnsaional too.

Try this site:
http://travelmalaysiaguide.com/malaysia-...
http://travelmalaysiaguide.com/...
plusliner and transnasional still the best choices...