*I would go for EMG-707s. I've got a set in my RG7620 and they put the Blazes to shame. Just last week I was setting up my friends RG7620 with the New 7s, I had my RG with the EMGs, and I had my UV with Blazes.
1. "New 7"- higher output than the Blazes, also more bass. They get pretty muddy for power chording, and for solos their nowhere near as articulate as the Blazes. Very similar to the "Super Distortion" for 6 strings I believe. Definetly Blazes over the stock New 7s.
2. Blazes- lower output than the New 7s, about 100-150 mv less I believe. More articulate than the New 7s, and more mids and treble too. Overall a much more balanced pickup, making it very versital. Power chords can get muddy on the lower strings when running a lot of gain and bass though. But I can't think of a better all around pickup, and it's also an excellent soloing pickup. Very close to the "Steve's Special" for 6 strings.
3. EMG 707- highest output of the bunch by far, a mix of the 81 and 85 for 6 strings. Very tight sound, scooped mids and boosted bass. My only complaint was a bit too much treble, so roll down the tone knob a bit. Never muddy no matter how much gain or bass, and it held together well for fast soloing. The only downside is the routing, but I did it by hand with perfect results. Plus the over-sized pickup size make the DiMarzios look wimpy in comparison. If it weren't for the routing and the $120 list price, every one would have these babies.
Overall, it comes down to a couple of options. The stocks may be favored by the KoRn crowd for thier bass and scooped mid sound. Via like players would probably appreciate the Blazes for thier lower output, articulation, and versitility compared to the New 7s. But anyone who tries 707s would never turn back. I haven't tried the Tone Zone 7s, so maybe give those a thought. I think they're probably a better version of the New7s, and may appeal more than the Blazes or EMGs. So shop around and use your ears. Most of every one here would agree that the stocks are not very pleasing, so think about your options......