Need better sound from my records, where to start?


I'm disappointed with the sound quality I'm getting from my current analog setup, and would appreciate some input on where to start making it better. I currently have a Music Hall MMF-2 turntable with an ortofon om 3e cartridge. I have an NAD PP-1 phono pre-amp feeding into my main system. My listening is almost exclusively with headphones through a tube headphone amp. The majority of my albums are bought used, in moderate to good condition. The problems I'm having are with excessive surface noise, and a slight breaking up of high frequencies.

My feeling is that I should go to a better cartridge first, along with the proper set-up tools, and an allsop oribitrac cleaner. Does that make the most sense? I was thinking of either the Shure V15VxMR or a Dynavector 10x5, with the intention that a cartridge in this range could last me through a turntable upgrade, maybe in the next year. Thoughts? Should I go after something other than the cartridge? Spend less on a cartridge? Thanks!
jed
I'm very interested in the Audio Technica OC9, however the pp-1 does not support MC. While my first preference would be to go with one that would work with my existing NAD phono stage, perhaps the Audio Technica paired with a Pro-ject phono box and some appropriate alignment tools would set me up for a good while. I couldn't find too much info about the Ortofon cartridges. Any further thoughts on those?
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The Shure M97xE "don't get no respect" because everyone focuses on the V15xMR. The M97 is no slouch, and real real cheap.
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To bad the old Nad pp-1 has no mc input.
So I agree wit Viridian go for the Audio-Technica AT440ml I was going to recommend it also, but thought the pp-1 had a mc input. The thing I like about the oc9 is it is much quieter than the Shure v15 in my experience.

You need to get a new cartridge to save your lp's from damage so 88 bucks for the Audio-Technica AT440ml is a good stop gate till you can save up to get a new rig, that would include a new phono that supports low output mc's.

This will be a sizable upgrade in the sound for you.
You will also need a cartridge on this turntable if you plan to sell it when and if you get something different.

Straight out of the box the 440 was great at tracking difficult passages clearly...There was none of the harshness or constrictedness usually associated with an unbroken-in moving coil cartridge. -Absolute Sound Sep/Oct 1994, Vol. 19, #98.

Hi-Fi World Aug 01
Bright, fast sounding and detailed, with fulsome bass.

List Price $219.99
Price: $88.29

http://www.needledoctor.com/s.nl/sc.2/category.363/.f
Cheers
Ron