Sheps ROM is very stable with everyday basic use. But don't try any game emulators or rely on the windows lock, as I noticed it was a bit slow. He is also using the WVGA youtube (seriously, I don't know why ROM cookers can't just use the VGA one, it's the same exact thing but for VGA!) and the ROM is also using the older htc album application. Titanium seems to be ignored by Shep and only the basic widgets work, such as email, phone notifications, text, time, pictures and calender etc. Other than that it worked very well with the 1.14.25.05 radio, at least where I live for calls, texts, GPS, and email.
Other than that I haven't really found any super-stable 6.5 ROMs if you want EVERYTHING to work such as all the WM programs and today-screens. But for the basics of a smartphone, I would vouch for sheps rom.