RE: Buying new scope for 7mm mag.
I've got a Zeiss Conquest on my 7mm rem mag and have one mounted on my ML as well. I have been very pleased with the Conquest's performance in all aspects.
If you can't afford one then the Elite 3200 is a decent scope, however the 3" of eye relief may or may not be a cause for concern to you. I have owned a number of these, while they may not be the top of the line they have proofed to be both reliable and decent in optical performance given the cost.
I know a couple guys who are pleased with their Burris FFII's but here they cost more than Elite 3200 and I certainly don't see a huge difference in terms of optical enhancement.