Sayann Raksakul 'taxi to korat, 2800 baht', is an excellent driver/guide.
I was planning to do a 2 day Isan tour (temples of Phanom Rung/Meung Tam on day one, Phimai on day two), with a drop at Sukhothai, in central Thailand.
As Sayann hails from Korat, it was the perfect fit.
He is a very safe driver, no motion sickness over winding Mountain roads, and promptly on time. As a plus, he also came into the temples on day one, and captured several fine photos of me, much to my delight.
His price is reasonable, We drove a standard Altis, as I was travelling solo, with 2 pieces of luggage.
Feel free to contact him, for day tours around Bangkok, or further afield. I am glad that I did.