Thinking about new cartridge


I am thinking of replaceing old faithful (benz glider) I have a TNT JR/ SME 309/ BAT vkp-5/ ZU xaus phono cable.
I am leaning towards a ruby H .8 output because of only 56db of gain in the vkp-5. I am unsure if .5 output would be enough, if it is it opens up a bunch of contenders, shelter 901/ lyra heikon/ VDH black beauty/ ZYX 100fs-h. I dont want to shell out a bunch of coin and find out later it could have been better.
Also I am concerned which one is a good match to the SME 309 arm. All comments and feedback is greatly appreciated.
Thanks David
cylinderking_1
You don't indicate what other equipment you own, or what kind of "sound" you want in a cartridge, so it's a bit difficult to know what to suggest to you. There are two cartridges, however, that I think ought to be on your audition list:
1. Grado "Reference" (0.5 mV output version) ($1200);
2. Dynavector 17D ($750).

The Grado is a moving iron, and has a wonderfully rich, musical quality to it. The Dynavector has been around for a number of years, but is one of the best moving coil designs, and it gives a number of much more expensive cartridges a real run for their money.
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Thanks all for your imput you all bought up good points. Jfrech nailed what I wanted to hear, someone who has used the vkp-5 w/ a .5 cartridge, may the hunt begin.