Mondial Restaurant: This is the swank joint in town with good food and service. Friendly staff and live Khmer music while you have your dinner (this is thankfully one place that keeps the volume down a bit). The staff is fair in their English.
Penh Chet Restaurant:
A step down but it's a clean, basic place with good food and the usual friendly beer girls. There is also live music here in the evening. There isn't an English menu, but the beer girls will have a lot of fun trying to help you ordering. The restaurant next to the Phnom Svay Hotel serves up the best food in Sisophan. It's a very simple place but the menu is varied and features many Western faves. Decent hamburgers, French fries, ice cream, among others are sure to satisfy your Cambodian road weary appetite. The place draws a good crowd of foreign workers and locals alike.
There are restaurant stalls by the shared taxi stand, along with loads of evening desert and fruit shake/drink stands all over town. Sisophan has a rather rowdy (and seedy) brothel area built almost on the RR tracks near the train station. With the train tooting it's whistle and vibrating the shacks as it crawls by, it's surely Sisophan's version of the popular book, Off the Rails in Phnom Penh.
The ladies are out in full force in the late afternoon, beckoning you over, laughing and seemingly enjoying the festiveness of the area that time of the day. Drink and food stands dot the area, and with all the local males milling about it almost does seem like a carnival.