You will get loads of options in that budget on amazon for brands like TP-Link, D-Link, Tenda.. your requirements are quite basic and any router can suffice your need. If you are looking particularly for a router with 2 antennae basically to cover a large area.. I suggest getting this.
One of my friends has it and has configured ACT broadband with it. There are always 4 devices connected to it and there have been no issues in streaming, work, or downloads.
@NoMansLand i have tried this this from a friend and does not meet my requirement , I work from home and need constant good stable connection in one room while my parents watch amazon prime in the hall , and 4 phones are always connected via wifi , with this requirement the DIR 615 couldn't hold up and i had issues with my WFH setup , so looking for a stronger and more powerful router.
Another thing to note is the placement of my router , my router is placed on top of a show case my room is exactly behind that wall where the router is and so i dont get a good speed and connection.
Then I suggest you go ahead with an Asus branded router. I am using Asus N66U for the last 6 years. It is a triple antennae router and there have been no issues with the number of devices. At any point in time, I have my tv, mobile, office laptop, personal desktop, echo dot, firestick, and a few smart bulbs. I have friends coming over and even when they connect their mobiles there is no lag of any kind.
But Asus branded routers will be above your budget. TP-Link, Tenda also gives high-performance routers at a cheap price but not sure about their performance. D-Link should be a better option performance-wise but not that particular model which I quoted above. You gonna have to do some online research on the router models in your budget, I am sure you will find one. Another option is the Mi Router, it has 4 antennae and fits in your budget. You will also find tons of reviews for it online.
Just my 2 cents OT .
I had a tplink wr841n single band 2 5db antennas . Thinking my performance would be better I upgraded and bought the tplink archer A5 4 5dbi antennas and a dual band router .
I have a 50 Mbps connection . I see no perceiveable difference between the performance of the two routers I have .
Cheers Ankush !
Thats true. Major factors when you see the differences in routers are
Number of devices connected and what each device is doing
Actual bandwidth.. I think Upto 75 mbps the speed over wireless is fine for any router