I have used NAD (50w per channel @ 8 ohms) and Cambridge audio (35w per channel @ 8 ohms) amp with Elac Debut B5. Both were able to drive these speakers comfortably even when the sensitivity of Elac B5 is 85db. Nad was a slight better performer because of the wattage and dynamics. If you are looking for budget deals then Marantz will be best suited just look for specs compatibility. The Indian company "Norge" also make budget amps. There is also one more Indian brand "DNM" but I am not sure about it's sound dynamics.