MM Cartridge recommendation


I am in the process of upgrading from my current project debut carbon(with acrylic platter and ortofon blue) to a vintage Micro Seiki DD-5.  It will come with the stock tone arm and Micro H-303 headshell but no cart. I am looking for any recommendations for a MM cartridge sub $500?  This turntable will be used with a Cronos Magnum III powering a pair of Triangle Acoustics Comete 40th anniversary speakers.

I was thinking of a Nagaoka MP150 or 200 but have no experience with cartridges other then the Ortofon 2m line  so all suggestions are welcomed. 
Thanks in advance. 

tritube

Thanks everyone for the much needed advice. @oldaudiophile and @imnop I will try to research out the mofi cartridge further as it seems like an excellent possibility as well. Having no experience with the vintage Micro Seiki, I am finding it challenging to figure out what the best synergy between the turntable, tone arm, and preamp would be.  I guess that is part of the journey I am on and looking forward to figuring out.  @mickeyb the bl-91 is a beautiful table. 
thanks again for the suggestions.  

The DD-5 is a design launched into the Market 50 Years ago, from the era when TT's were going in new directions, the Belt Drive was to dominate shortly after the era.

Think of it as a very very early Tech' that migrated to Tech Das.

It is also believed by some to be a version of the Tannoy-Micro produced in thr same era.

There is plenty of enjoyment to be had, and learning to be attained.

I recommend to be inquisitive and to be willing investigate variations on methods for mounting/supporting the TT, a discovery made through making changes can be very very satisfying and wanted to be kept in use.

Also a 50 Year Old Platter Spindle Bearing - Unknown History - Benefits can be found from learning what to do for the servicing of this part. 

Congratulations on scoring a very nice turntable.  I understand that it is fitted with a MA-303 tone arm which has a medium effective mass.  So any medium compliance cartridges should suit but avoid high compliance cartridges or low compliance ones.  I agree that it would be sensible to check out moving iron cartridges; there are some beauties amongst them.  Enjoy