Looking for suitable modem to go with my WNDR3700 router

[husskii]

Hi guys
I just bought a netgear wndr3700 for my adsl2+ home network. I now need a decent modem that will give me the best performance for my router. I found another thread with the same question, but I think the modem suggested was for a cable network and my network isn't on cable, I only have a normal adsl2+ via the Phone line with a splitter.

Can you please suggest a decent modem, other then back in the dial-up days I have never used a standard modem so I am pretty clueless when it comes to modem.

Thanks.