The 826L is a good little router for a budget, I have this one. For no budget, the DIR-868L. I have the 868L too.
Kind of up to you and your budget situation and what you want to do. AC mode that the 868L offers is good however not all devices can use it, just yet. Yes you can still use your devices on the 868L on N mode just fine. If your not wanting any AC or future proofing, then the 826L is a good option.