How much power have you got under the hood?

Hello my fellow audio lovers, I am buying a new amplifier and its down to the NAD C-370 (120 wpc) or the NAD C-350 (60 wpc). I have dual 10" 3 way JBL speakers (ND-310). they can handle 250 wpc and are 91 db@1 watt 1 meter 8 ohms. I like to listen loud but i am not sure if 60 wpc is enough for me or do i need to save up a few more hundred and get the 120 wpc... How much power do you have? How much power do you think i need? I dont want to have to make the amp work real hard to give me the power i need, and i cant audition these amps in my home. So as you can see its not an easy choice. I have a reciever with 130 wpc..or so it says. and its enough power just not very clean and the amp pretty much sucks. So im upgrading. Thank you for looking.