I'm real happy with the used dual band Netgear WNDR3700 V1 that I bought off of eBay for $50.
Others are using the Apple routers. Make sure you get a current version of these - older ones are known to have problems

.
These support the mostly unused 5 GHz band

vs the crowded and interference prone 2.4 GHz band

. All iPads are dual band

.
Note that you must let your router fully boot before you power on your DL1608 or the DL1608 will not "see" the router and you won't have wireless capacity

. My router takes about 1-1/4 minutes to boot

!
Also you might want to disable the 2/4 GHz if you aren't using it and I set the data rates at 56 Mb so that the router doesn't take up more RF channels than needed.