Israel has, or at least will have the best.  Block 60s are basically the best that operational F-16s can get, hands - down.  With the Block 60s, finally the F-16 gets an avionics suite on par with the latest generation of fighters such as the F-15E, F/A-18E/F, F-22, etc., not to mention a much more powerful engine.  Oh, and did I mention the conformal tanks and increased range.  So technically, yes, Israel has or should soon have the best.  Why we don't make such an F-16 ourselves is beyond me.  I swear, sometimes it seems as if the Air Force is always trying to cut the F-16 short in terms of which planes get the greater amount of money / production numbers.  I mean, both the F-16 AT (Falcon 21) and the F-16X were potential threats to the F-22 program, mainly because they both offered similar performance at a cheaper price.  But as we all know, neither went into production.  And then there's my favorite variant of the F-16, the F-16XL, which wasn't put into production not because the F-15E is was a better plane, but because the Air Force wanted McDonnell Douglas to continue production of the F-15.  Oh, I will definitely never understand certain ideas in life, particularly the ideas centered around politics.  Okay, but enough of my ranting, yes, nothing else in the F-16 family can touch the Block 60s.  Block 50/52 F-16s are indeed good, but not that good.  End of story.