Best Android/IOs emulators?

First of, it's more tablet emulation than phone emulation, and when you load it on a lightweight laptop, it's basically a free tablet :P

But also:

1. Power. You always get full computing power, up to the limits of the emulation. ie, you tend to have quality equal to the best phone/tablet you could buy at any time- and no need to upgrade each new release.

2. Price. It costs $30 minimum to get a functional smartphone used. I'm not a fan of smartphones [or rather, the shape of most, marketing, functionality (bloatware alone..yech.), and presentation related to them (so, y'know, most of it :P) ], nor do I have the budget to frivolously waste on them (and nevermind their often absurd fees). Tablets I like (Tablet+normal phone = ideal), but they're way more expensive. I do plan to get ones eventually, however, if budget ever permits.

3. Convenience. Mouse integration. Hotkeys. etc. You can do so much more with [a laptop with emulator software designed around keyboard/mouse integration] than with a normal tablet- and it's not even comparable to the usually subpar phone experience.

In contrast to your statement, I'm not sure why anyone would WANT to use a phone for gaming, over emulation or a tablet.

Portability [over that of a tablet]? sure!
But that's not a factor for me, so why go through all the negatives I mentioned, for a notably subpar experience?