Im looking at getting a power amp and have looked at 2 possibilities. The NADC70 (120 watts) +ROTEL 1070 (130 Watts). Which should i go for?? The NAD can handle more power using 4-8 ohm speakers where as the ROTEL only applies to 8 ohms only. Only really interested in boosting left and right channels. Budget up to £500 only Any comments greatfully received.