@Msfunnybones98 It totally depends upon your taste. Give everyone a try before sticking with a particular author.
Balakumaran Sir - Ini ellam sugame
Jeyakanthan Sir - Oru manithan, oru veedu oru ulagam.
Jeyamohan Sir -Aram
Bava Chelladurai Sir - Pangukariyum pinnarivugalum
Sujatha Sir- Ganesh Vasanth Series
Kabilan Vairamuthu - Meinigari
S.Ramakrishnan Sir- Thunaiyezhuthu
Ku Azhagirisaami Sir - Raaja Vanthirukiraar
Perumal Murugan Sir- Mathorubhagan
Su Venkatesan Sir - Velpaari
Kalki Sir - Ponniyin Selvan
Ramani Chandran Madam - All romantic stories have happy endings
Vidhya Subramaniam - Uppu Kanakku
The above books are available in paperback.
If you are looking for Kindle ebooks, check out the books of Amuthavalli Nagarajan Mam, Malliga Manivannan Mam, Hameedha Mam, Gowri Muthukrishnan Mam, Monisha Mam, Jaansi Mam, Vanisha Mam, Aarthi Ravi Mam, Swetha Chandrasekar Mam, Janani Naveen Mam and of course my book - 'Nithilaavin Nesan' :)))