The AEBS has the 5Ghz frequency which Dlink will introduce on its DIR-855, which hasn't been released yet. If you want full N speed on the AEBS, you need to use 5Ghz, while the DIR-655 uses channel bonding on the 2.4Ghz frequency which will give you full N speed. The AEBS doesn't not use channel bonding on the 2.4Ghz frequency.
The question is the compatability of the routher and the computer wireless card. If you have an N enabled mac, then it shouldn't be an issue. If you're mixing various vendors, then you may only get 130Mbps.
The DIR-655 gets many good reviews and seems to be the most highly regarded N router on the market. I have used D-link equipment and have generally found it to be good and easier to configure if you're coming from another router manufacturer. I use the AEBS because I have a mac and wanted to use the 5GHz spectrum which is generally less crowded. If you're buying on-line, the price premium for the AEBS is about 50% over the D-link