FWIW - I just purchased the solid Blaster 2.0 in blue/white from New Enough. For the money, it's tough to beat. The only difference is the 3.0 has fabric panels that go along your side and under the arms that zips off to reveal a mesh panel for ventilation, and your get CE rated armor. If CE armor is what your after, the 3.0 has it. For me, the extra cost was tough to justify - since I can just about get a perf. Blaster 2.0 or a new JR Phoenix 4.0 (with CE armor) with the money saved over buying the new version of the Blaster. Plus - I'm not a big fan of large panels that zip off.
Just my $0.02 -- YMMV