This is a tough one, but I’m an Ortofon guy and I’m going to have to list my top five because I rate them so much at their given price points, so from high to low price,
Ortofon Cadenza Black, just sublime, I just couldn’t bring myself to ever spend any more with what this wonderful cartridge offers.
Ortofon Cadenza Blue, if you can’t stretch to the Black but can afford this one, buy it, it’s almost as good as it gets for me.
Ortofon Quintet Black, best cartridge under £1k, really excellent.
Ortofon Quintet Blue, my current cartridge, can’t fault it, utterly enjoyable, a real slice of proper high end sound for (relatively) very little money, I can just enjoy this cartridge and play vinyl for hours on end without worrying about the cost of replacement when it wears out, a new one is £280 when you trade in your worn out one, and that’s likely what I’ll do, it just sings on my Rega P5.
Ortofon 2M blue, great MM cartridge, this is where cartridges go from being “okay for the money” to actually good imho.
I’m going to give an honorary mention to the Ortofon 2M Black, it’s a great cartridge and the best MM I’ve heard, but the Quintet blue has just ousted it for me, now there’s a caveat with the Quintet Blue, although it’s a budget MC, it really deserves a very good MC phono stage to give its best, I’d happily pair it with a phono stage that costs three times as much as the cartridge itself, and when you do, you’re rewarded with an extremely open, dynamic and exciting performance.