Hi and welcome! Those RYs are brilliant rock PUs, can never praise them enough.
On the count of P90s I think you got two main options: The Nantucket and the Supermassive. These two are quite different though and I suspect you would like the Nantucket better.
The NT is a classic P90, power growl and full old school P90 character. Great for anything blues and rock, born for those things. Depending on what kind of metal you do they should be able to handle that too, P90s have a way of keeping tighness and definition under gain which is amazing. After hearing some fast high gain solos played on a Manhattan neck (and trying to do so myself) I have no doubt that these things can go heavy. I think they are very similar to the MQs too and those really can go very heavy.
With the NT being the classic character choice the Supermassive is a slightly different take on the P90. While very much retaining the P90 we love it has a much more modern voicing. Also a quite a bit more low end, making its growl more guttural. This one is more for the hard rock and metal side of things, but still very versatile.
However if you are looking for a classic P90 sound that can do more and like the RYs the NT should be the ticket here for you. Little doubt in my mind on that.
