Comparing the Rakza 7 vs Tenergy 05

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Having used the search function quite a bit to compare between rubbers, here is my contribution on a Tenergy 05 vs Rakza 7 comparison (I'm putting this here as I've received a few PMs & emails asking me this question):
R7 advantages:
I was familiar with T05 on FH on a TBS. Later, when I tried out the R7 on my blade, my initial impression was that this is nowhere as spinny as T05. I didn't realize that it needs slightly different stroke mechanics. So, if you're a T05 user trying out the R7, keep this in mind. Play with it for about 5 hours and you'll get the hang of it. I experienced the opposite situation recently: having used the R7 for many months, I cut and put on a new T05 and was wondering where the T05 spin was! Again, the difference in spin between the two rubbers is not much 
(with R7 being marginally better IMO) but they need slightly different stroke mechanics to generate the most spin out of them
One difference I find between the two rubbers is that while the T05 is relatively poor in off-the-bounce loops (due to its softer sponge), the R7 excels at it (in this attribute, it is a bit like a Chinese rubber). To generate full spin with the T05, one has to loop at peak or later when the ball is falling down
Another difference is that T05 loops take their own sweet time to reach the opponents! With a R7 loop, because (i) I can execute it off the bounce and (ii) R7 is faster and has marginally less dwell & throw than T05, the opponent is hurried into a weak response. Not so with the T05
T05 loops kick upwards more where as R7 loops kick forwards. It is easier for hitters / smashers against T05 loops if they're familiar with how that rubber acts (as they can always wait a 1/2 step back for the ball to bounce high and then hit)
R7 is a lot less bouncy in the short game and has a hard sponge. This creates this seeming conundrum - my serves are slightly spinnier than with T05 (as I can swing harder knowing that the serves won't go long due to R7's lesser bounce) but my return of serves are much easier with the R7
My accuracy (ball reaching as close to destination point as possible) in looping with R7 is better than with the T05 (possibly due to the harder sponge)
I can also create greater variety loops with the R7 (both fast, low loop / drives and slow, spinny ones) than with the T05
R7 is way better for smashing / driving than the T05. It is better at smashing / driving than the Tenergy 64 and is possibly one of the best euro / jap rubbers out there for this purpose
R7 loops penetrate better than those of T05
R7 is an easier rubber to block with
Using the R7, I get more linearity in output speed vs input power than with the T05
T05 advantages:
T05 is easier to counterloop with than the R7 (which excels as a close to the table / mid-distance looping / driving rubber as opposed to counterlooping from afar)
It is easier for beginners (< 1300 USATT rating) to generate spin using T05 than with the R7 (though I wouldn't advise beginners to use either rubber!)
The 'window' for looping with T05 is slightly better than with R7
Tenergy 05 is more durable than Rakza 7 which partially offsets the fact that Rakza 7 is almost 50% cheaper (thanks to Silva7 for this one)
Hope this helps

Edited by slevin - 07/02/2012 at 7:16pm