You managed to find reviews.....
yet couldn't google.... "HyperWRT"??
First link you get after googling
http://www.hyperwrt.org/
Code:
HyperWRT is a power boost firmware for the Linksys WRT54G and WRT54GS router. The goal of this project is to add a limited set of features to the last Linksys firmware, extending its possibilities but staying close to the official firmware.
HyperWRT is based on Linksys 3.03.6 firmware for the WRT54G and Linksys 3.37.6 firmware for the WRT54GS.
HyperWRT will work on these hardware versions :
WRT54G : V1, V1.1, V2, V2.2, V3
WRT54GS : V1, V1.1, V2
HyperWRT has these added features :
* Adjustable Transmit Power & Antenna Select
* 13 Wireless Channels
* 'Boot Wait' flash protection
* Increased Port Forwarding & Triggering Fields
* Increased Qos Device & Application Fields
* Increased Access Restrictions Policies & Blocked Services Fields
* Command Shell
* Telnet Daemon
* Startup & Firewall Scripts
* Uptime
* ...
It's basically a hacked up version of the firmware giving it additional features...
DD-WRT, similar...
http://en.wikipedia.org/wiki/DD-WRT
All the newer routers i've used are all firmware updateable....
Firmware is basically the instructions or how-to manual that your router operates on....
Regardless what's router you get, your still limited by everything on the outside world...
I've used that router and it's fine. If you don't know what some of these terms are, yet alone how to go about finding out what they are..... your prob not going to really need to mess with them... and if you wanted to, i'm sure you'd have more drive and googlesense to find out..