Best Ortofon?


I'm ordering a Rega P1 with a Rega MM Phono Pre (used). The P1 comes with the Ortofon 5E cartridge. As I understand it, that cartridge has the same electronics as the 10, 15, 20, 30, and 40, so I'm thinking of upgrading by just buying a new stylus. The prices are:
15 for $60
20 for $100
(30 for $140)

I'm probably going to do the 15 or 20. Do you think these are a big improvement over the 5? Is the 20 a big improvement over the 15?

I'm also thinking of the glass platter upgrade for $69. Will it be a noticeable difference, esp versus the stylus upgrade?
arlipton
So does the 2M Red mount easily to the P1's tonearm? BTW, I'm pretty handy, so if the dimensions are good, I can probably do a good job. Thanks again.
Any cartridge should mount easily on that arm. You should have no problem at all. But, again, if your dealer sells both brands he should do it for you at no extra charge.
If thats your price range. I'm currently sold on the 2M Red, I know its not a nude eliptical, but I am blown away with its performance.

and Like Ekobesky said, when you out grow the Red you can just upgrade the stylus to the Blue or Bronze with practially no effort.