Puchi vs. ZZSE?

[cheesehead]

I would like to know the comparison between the ZZSE's.
Here is what I have heard so far:
Puchi Pros:
-Differential
-Propo that actually works without soldering
-better range
Cons:
-larger
-less modifiable
-@#@#$@ expensive
-impossible to find.
ZZSE's:
Pros:
-Cheap
-Small
-Easy to find parts
-simple to mod
Cons:
-Need modification for the steering to work.
-Slightly slower
-No ball bearings or diff.
P.s. if someone could find a 50$ Puchi, I would be grateful. That, or a Puchi diff.