Don't know if this might help some people but this is something I did and the versions of what software, rom, prl etc. I have now.
After trying 3 different evo's, one which actually started out with great data speeds then 2 hours later went to crap. I finally decided to stay with a sense rom so no going back and forth to change settings via the EPST.
Here is what I have on my phone now and tested several times at the speakeasy.net speedtest and was getting anywhere from 1.5 - 2 mbs speeds consistantly and with the fix on here also.
I am running Synergy (RC1)
Baseband (radio) 2.15.00.05.02
Kernel Version 2.6.35.10-gc0a661b
HTC-kernal@and 18-2 #1 (this was with the rom)
Android Version 2.3.3
Software# 4.24.651.1
PRI# 1.90_003
PRL# 60679
NV# 1.90_003
Couple other things I notice comparing the 2 thru ##DATA# and going to advanced settings or data profile:
Under the setting Roam Orig my phone had EVRC the newly activated phone had voice 13k. I changed my old phone to setting of voice 13k.
Under the setting SPI MN-AAA my old phone was set to 0 the newly activated phone was set to 4D2. I set mine on my old phone to 4D2.
Now not sure if my old phone since it was not in service and I activated the new phone that these settings change on the old phone or not, but so far my phone with the fix on here and setting everything that I mentioned above, yesterday I was getting .3 -.5 if lucky here at my work location and now 1.5 -2 here. At home I wasnt doing any better than .5 which I think is a tower issue where I live.
The reason I did it all this way is the 2nd phone I got from Sprint was fast and compared all of its settings with mine and figured it was worth a shot to see if it would work for my phone.
The sense Rom I have so far is much faster than CM7 and I love the little extra things it has, very happy with it.