My sister has been using the router for nearly 2 years and I recently purchased it. I don’t regret buying it because the range covers every nook and corner of my house. In fact, the router was recommended by my internet service provider.
I have used the single antenna router as well and the range of that also covers the whole house. Though a tad slow.
The product comes with a 3-year warranty. What more can I ask for? Buy it from Amazon.in at a lower price. I bought it from there and saved money.