Depends on budget. Specialized and Giant and Merida have affordable entry RB. In the range of below 4k. Aluminium. Carbon bikes will be 4k and above. You can go look see these shops not too far from subang
Usj cycle - been in usj for more than 10 years. Carries a variety of bike brands.
Pedalspot in taipan - more atas brands. No harm checking out.
Specialized PJ in kayu area damansara - Specialized obviously
Giant bike in Aman suria- giant and Liv brands of bike.
Sometimes you go to these shops talk to the people they might know someone who's upgrading bikes (which happens quite alot).
Good luck with your search