Detection, on 14 February 2013 - 22:09, said:
I have a Samba share set up via the USB port and I get the full 100mbps (10MB/s) read/write to the drive via LAN, burst speeds upto 15MB/s, I only have wireless G laptop so can't test if it can perform any faster atm
USB2 can go much faster than that, I managed to get full speed only from 600mhz devices mostly because samba is very CPU intensive.
Detection, on 14 February 2013 - 22:09, said:
Of course there are going to be better routers, but OP wanted a router for under £100 and some feedback from someone who owns one.
For a typical house full of devices, it manages extremely well, I have all 4 LAN ports wired to different devices, I have 5 wireless devices connected with around 3-4 connected at any one time and its fine
If you have experience with a better router at a similar price then by all means, advise away

There are hundreds of routers that can run DD-WRT/OpenWRT very reliably nowadays so it's just a question on what you actually want from one, for example I bought a router for OpenWRT a couple weeks ago to use as 3g router, I paid it 25€ (TP-Link 3420) yet it never freezed or had to be restarted (and the wifi range is actually decent). Some have lots of ram, some have fast CPUs, some have multiple USBs, some have 3 antennas or can go up to 1W of transmission power, there's as lot to choose from.
Shikaka, on 14 February 2013 - 22:16, said:
I dont think that WRT160NL actually has ADSL build in, meaning i would need to user a separate modem to connect to the internet yea?
As I previously wrote in my post there is literally one (1) modem+router that can run DD-WRT. The reason is that DSL drivers are proprietary and usually their source code is never released so DD-WRT and OpenWRT developers have a very hard time getting those to work. If you don't mind running OpenWRT instead you can find the BT Home Hub V2B (it has to be the B revision) with the modem, wifi 802.11n and USB: it's very cheap and very reliable.