I have XSS and its pretty bad value for money if you consider the PS5 DE, and consider the HDD is full after 3 or 4 games (I had GoW5, Halo 5, FH4 on it and it was pretty much filled up). Its good value for money however, if you use it only for GP and don't want too much at the same time on it. Games I beat are being thrown off. Its also good value if you want retro Xbox games. If you buy the extra space, you might as well get a Series X though you need to upgrade that one too as 800gb isn't going to cut it either.
I do like it, its as fast and accessible as the PS5 and SX, really makes the Pro and One X cumbersome. Though it already runs some last-gen up ports at 1080p. It can do RT and 120fps sure, but at what cost? Would MS be better off with a digital Series X? Who knows, but it wouldn't be 299.