QUOTE(vergas @ Aug 11 2010, 12:02 PM)
People have not able to get another router to replace the D-Link DIR 615 yet. So its the best viable solution currently.
Don't be silly, there have been many people who have been able to replace the DIR-615 completely

It's just that no one ever posts back here once they get their system fully set up

! I myself have replaced the DIR-615 with a Cisco rvs4000 configured as a switch to handle VLAN tagging. I'm sure that you can purchase a cheap managed switch such as the Mikrotik RB250GS and configure that for Internet + IPTV access.
Then there are port based VLAN routers (running WRT firmware) which are on the market but no one has tried to use them yet :

You can also use a dedicated Linux box with 3 NICs for an IPTV + Internet router.. there are many ways to do this.
If you do not have the hardware to replace the DIR-615 (in the event it fails), I suggest you guys keep aside a Linux LiveCD which you can configure VLAN tagging + PPPoE on so you can wire your PC directly into the Fiber/VDSL BTU and connect to the internet. If its just light browsing you're after while waiting for a replacement, there's also my VLAN forwarder app for Windows so that you can use the Windows PPPoE dialer with the Unifi BTU directly.
I don't really think the failure rate for DIR-615's can be as high as you guys say it is. There was even another thread here about how to get your ipod/itouch/ipad working with the DIR-615 wifi and Unifi support claimed his router was faulty/spoilt because they didn't know what was causing it. Some of you here have said the orange light keeps blinking, this means your DIR-615 may have entered emergency room mode by mistake. Normally when the router is physically damaged, there will be no lights on it. Having orange lights blinking/constant reboots indicates a software problem that could be fixed by a re-flash in Emergency Room mode.
Truth be told, the DIR-615 G1 is a decent router using a standard router chipset + hardware. The only thing causing many of these bugs is the firmware that TM has placed in it. I've been torrenting for 3 days straight after flashing my DIR-615 G1 to dd-wrt and its been really stable. Since it has a 384Mhz proc + 32MB RAM (which is way better than some of your linksys 54g models), it can easily handle 10,000+ connections with a custom conntrack table size.