I now have an HL-T5676S that Samsung sent as a replacement for my HL-R5688W that they ruined when they replaced the light engine with a refurbished unit that caused more problems. Since they no longer had any 'new' parts for it they gave me this new tv. I was sorry to see the HL-R go as it had an absolutely gorgeous picture that made everyone say "WOW!" when they saw it, (before the light engine problem).
For the HL-T, out-of-the-box picture is acceptable, and it actually has truer red than any tv I've seen or owned, (red seems to be a problem for most tv's. They always seem more magenta or pink). The Rainbow effect is almost nonexistent. I think most people will like what they see if they buy this tv. Changing from Dynamic to Movie mode and turning off DNle makes it look more 'real,' but for the most part I have not had to make too many adjustments to get it close to what I had with my beloved HL-R. I'm sure Eliab could make it look even better, but for now I'm happy with it.
If I were to complain about anything, it would be:
1) What's up with this Cracker Jack toy remote??? It's a good thing I don't actually need it as I use a Sony learning remote.
2) It has the slight 'bow' effect, but can only be seen with the Directv menu guide.
3) I had to shell out money for a tv stand, as the HL-R was the pedestal version, but at least all my components are now in one cabinet.
Oh, and thank goodness they foresaw that not everyone wants to see that annoying blue light at the bottom of the tv. Turning it off was the very first adjustment I made