Cartridge upgrade


I currently have a VPI Classic 2 with a Benz Micro Glider medium output cartridge. I am thinking of upgrading but am not sure what price range I have to go to to get meaningful improvement. For example will a $`1500 budget do it? If so what to get? Thanks.
jimbones
Well, Denon 103 is also widely popular cartridge, but it's absolutely awful.
Popularity means nothing as much as the professional reviews. 

I've noticed that some people who likes modern cartridges never ever tried some of the the best vintage cartridges today in camparison to those overpriced modern ones.