Xbox 360 & WRT300N config (at least for wired)

Question

This is what I got from Linksys support - and it works great.  Now if only my connection to my house was a T3...
Please reply with any enhancements to this if you know of any!
(and with this setup (port forwarding), will the linksys prioritizer (part number OGV200) provide any more benefit?
1. Assign static IP, subnet mask, gateway and DNS on the Xbox 360.
a) Go to the System area of the Xbox Dashboard.
b) Select Network Settings.
c) Select Edit Settings to adjust your:
IP Settings (IP Address = 192.168.1.20, Subnet Mask = 255.255.255.0, Default Gateway = 192.168.1.1)
DNS Settings (Primary = 4.2.2.1, Secondary = 4.2.2.2)
2. Port forwarding
88 (udp)
3074 (tcp & udp)
a) Access the router's web-based setup page and click on Applications and Gaming tab.
b) Under Port Range Forwarding sub tab, we will enter two entries for us to forward the two ports.
First Entry
Name = Xboxa
Start = 88
End = 88
Protocol = UDP
IP Address = 192.168.1.20
Enabled = Checked
Second Entry
Name = Xboxb
Start = 3074
End = 3074
Protocol = Both
IP Address = 192.168.1.20
Enabled = Checked
c) Save the settings.
3. Still on the router's web-based setup page, click on Setup tab.
a) Set MTU from Auto to Manual.
b) Change the MTU size from 1500 (default) to 1365.
c) Scroll down and save the settings.
4. Power cycle. Unplug the power adapter of the router for 10 seconds and plug it back again.
5. On your Xbox 360:
a) Go back to the System area of the Xbox Dashboard.
b) Select Network Settings.
c) Select Test Xbox Live Connection.
d) After the system has completed its tests, select More Info to learn more about your network, paying close attention to any test that failed.

Answer 1

Just another nudge - in case there is an answer (or opinion) out there!
After performing the router configuration below, is there any benefit to buying/using the OVG200 prioritization hardware?  (or are there settings on the router that basically do the same thing?
Thanks again!