I like the AT95E-- it's basically the standard-mount version of the AT92E p-mount family and can take its styli, after a couple of quick snips, so for me it's a versatile cartridge, and you can still easily get the stock styli for it. It's a good cartridge without any nerdish futzing around needed.
I've never been able to find a standard-mount body that will accept the surprisingly capable PSX styli, so you're stuck with using them with the PSX-A adapter. Usually adapters are to be avoided because they all too often add considerable mass and height. I measured my AT95E and my PSX-30 in its adapter in identical headshells, and the PSX-A added exactly 1mm to the height-- pretty close.
How about mass? A p-mount cartridge has to weigh very close to 6.0g and of course the adapter adds let's say 2g more, total roughly 8.0g. My AT95E weighs 5.75g all up, so advantage AT95E.
Soundwise, in my opinion, it's the PSX all the way. While it would be happier in a lighter arm (in, say, a Technics linear tracker), it handles the arm on my SL-1700 Mk 2 surprisingly well, helped along by a lighter-than-stock headshell. So I say PSX-30 (still available off the shelf from at least one online vendor), or PSX-40 if you can find the stylus. On the other hand, why not have both? They're different enough to be good at different things for different situations. Besides, both is the AK Way.