I wouldn't try to imply that your one of those brand whores. I just felt the question was broad ya know? Ask if Gibson guitars are any good and some will say yes and some will say no. And the same with any other. Might as well ask if black licorice is good. Unless you're gathering data for a book, you're just going to have to taste it. It's not BTW
Are those J MAscis ones MIJ? That's an indicator of quality to me personally. But wherever those are made they are fucking awesome and I've always wanted one. That red Viper I posted is made in Vietnam and I have a white one that's made in Korea. Both are solid as fuck and as lively as any set neck guitar I've ever played regardless of manufacturer.
I'd imagine you could find JM pickups wound for more output and less heat. There's a spectrum between the two for every reasonably common style of pickup. GFS makes nice sounding pickups in my experience and the price is generally low. If they don't offer what you want right on the web page I'd suggest an email. There are also lots of smaller custom pickup winding dudes out there that can probably git 'er done but it may cost a bit more.
If you need it to be another guitar then a Viper 256P can be easily had for $350 or less. I don't think they're currently in production but they are very recent and very readily found. Retail new was only $359.
Lastly I am posting a picture of my white guitar because it's rad.