For 99% of users, triple channel and hyperthreading are both completely useless.
The only reason I got X58 is because it came out before P55 did. A lot of people with I7 CPUs actually disable hyper threading so that they can clock them higher for games. Higher clock speed is all that matters for games, and 4 cores will be plenty for a long time.
Also 2500k = 32nm, cooler and higher overclocks than a 25nm I7.