WRT54GL user with Tomato 1.23 and life is SWEET!!
Followed a QOS template online and tweaked it a bit for my Remote Desktop, VPN & website hosting uses. So far so good, DEFINITELY better than DD-WRT v24 SP1.
Its simpler and though may lack a few functions such as multiple SSIDs and err...what else?
Tomato have something else that DD-WRT don't. Multiple DDNS service logins.
I have DYNDNS & OpenDNS updating both running on TOMATO. DD-WRT only have option to do ONE and i don't think OpenDNS is even an option on DD.

Lastly, love the almost never need to reboot function.
Fast and clean webUI.

DD-WRT's interface sometimes feel like it hates Firefox too. *sigh*.