Cant say i've noticed speed to be an issue, but then again, i'm used to using the xda exec. I've had my prophet for 5 1/2 hours now and i'm loving it - sooo much quicker than the exec.
I've not noticed the slowness changing between input types either, but i'm sure in time i will.
What rom are you running? mine is the i-mate jamin :
Rom : 220.127.116.11 WWE
Date : 09/01/06
Radio : 01.14.20
Protocol : 18.104.22.168
ext rom : 22.214.171.124
Only one issue i've noticed, the loudspeaker on the back is piss poor - it distorts even when i receive a text message
Vodafone UK SIMs in....
HTC Touch Pro -+- HTC Touch Diamond -+- HTC Kaiser -+- HTC Wizard -+- BlackBerry 8800 -+- BlackBerry 8310 -+- BlackBerry 8110 -+- BlackBerry 9000