Help needed choosing router

Hello. I need help with choosing a router for my network.
Just can’t find some information on your website.
It’s a small network in the university with 150 devices on different platforms (win, mac, mobile) connected at peak hours. I think, it should be kinda all-in-one router for easy management.

Requirements.

150 devices connected to the network
Min 75 MBit/s or 100 MBit/s speed on WAN connection through L2TP with a services (firewall, QoS etc)
Web-interface
VLAN tags support with ability to set up DHCP for each VLAN
QoS based on application traffic control. For example, to set low priority for torrent traffic and high priority for http traffic
Stability ;)

It will be perfect, if this device will support user authentication when connect to the network (builtin RADIUS server or just authentication web page).

Doesn’t matter:
Number of WAN ports. We are using only one connection from one ISP.
Number of VPN tunnels. We don’t have remote clients and not using VPN.
Wireless interface. We already have access points.

Thanks.