With the Hornady Leverevolution ammo, the old 30/30 certainly has got a new lease on life. I had some hot loads worked up 150 gr round noses, and the factory Hornady's were 1' higher at 100 yards. If its a 30/30 your wanting, that's what I be looking to shoot. And now Hodgden has released the powder they use and the FTX bullets are available so you can recreate it yourself.
I shoot a Marlin 336 C. I bought it in 2007, I don't know when they started having the quality issues but I've really been happy with mine. I had one issue, when it was brand new it would pop the lever open when I was putting shells in the magazine. But a quick trip to the smitty and that was solved.
Shoots great to. I just use the iron sights, (the C comes with a hooded front sight FYI
) and I can place all my shots were I want them at 100 yards. We set out some clay pigeons we had and I went 6 for 6 as fast as I could work the lever.
My buddy's little sister shot a little garden raiding buck last fall using leverevolution bullets in a 45/70, hit it in the neck, I was shooting clean up with the 30/30 and put him down for good.