I agree with Dosley01 too in regards to choices. I suppose the reason why you ask for MM is that this is limited by your phonostage. You don't really have a preference for MM other than that? If not, might I suggest thinking about an MC-transformer? IMO this gives a better sound and gives you a wider choicerange. If your budget is $1k you should be able to find a nice combination of 2ndH tranny plus very good MC. This would expand your range of options very, very much.
Here's an example that isn't expensive (under $100). This one is actually new with NOS trannies.
Or a used
Denon AU-300LC LC-OFC Step-Up Transformer. I don't know where the price is going, but it's from the US.
Or even a
pair by Yamamoto soundcraft. More expensive but well worth it I think.
There is a lot more on offer than there has been in years I must say. And reasonably priced too. Not just >$1-2k.
Here's a verbose explanation that is probably better than I can explain. My experience: a step-up in front of a good (tube) MM sounds better than any MC-phonoamp I heard. And a low-output MC sounds better than most high-output MC/MM. I bought an Audio Innovations MC1000 about 20 y ago and I am still very happy with it. It was really expensive then but I then it doesn't deteriorate, it lasts a lifetime and many cartridges.
There is the matter of impedance matching. I have on my tranny two options high/low. I can hear a difference but I never really had the idea that either one was really wrong. So I wouldn't worry to much about that.
I initially bought it to be able to play an Audio Technica OC9 (upgrading from a very nice Milltek [Kiseki] Aurora High output MC). Still a cart that I heartedly recommend, or the similat AT33PTG. After that one broke down (after a really long time, all through the '90 well into '00) I temporarily went back to The Aurora which couldn't really make me happy anymore. I bought a DV Karat 17D3 MKII and again, bliss. I've used a Kiseki Blue on it and now I'm using it with a Koetsu Urushi. After I bought my current Jolida JD9 I thought I would try without it since it is really good on both MM as MC. But it makes such a difference! It is really so much better with step-up>MM than >MC that I took out the whole input-adaptorboard an fed it straight into the input of the JD9 (55dB amplified by the JD9 instead of 85 or 95dB). This is a lot quieter and sounds smoother, faster, more open and dynamic. Just alround spectacular.
This will increase your scope to include FI
ZYX R100-02
Dynavector 20X2L Low Output or DV Karat 17D3
Yamamoto Soundcraft YC-03S Wooden body (ok, just out of reach)
Audio-Technica AT-OC9/III, AT-33PTG/II, ...EV
Shelter 501-2
several (modified) Denon carts (DL103, A100, S1, Zu) Look at this:
DL103 /w Graphite body, Boron cantilever and Shibata tip
Or whatever nice you might run into...
PS I found a site that does retip service and can replace with
sapphire cantilever + micro-ridge stylus. (cantilever+tip €260+€30 international s+h). It looks like this:
Combined with
his wood body (€105) a modified Denon DL103 (which is pretty cheap) would look something like this:
Sorry for the large pictures, I don't know how to scale them whem linked