Performance on my 3a was disappointing coming from the 2 XL. Quite different experience with the 4a, even with a 730 and half the refresh rate of the S20 FE. Very smooth, none of the 3a lag I experienced.
This was meant as a stop gap before the 6 Pro and to maximize resale on the S20 FE, but I don’t feel I’m compromising a whole lot with a $350 phone. Great phone!