Any opinions on a whole house catalytic carbon filter with a backwash system?

Looking at Springwell cf on sale now for around $1,100 that doesn't have backwash and comparables, like Halo 5, with backwash are around $4k. I'm hoping to find something in between. I'd also entertain an add on our manual solution if possible with the Springwell. My goal is to remove chloramine and low maintenance. Also would love to know if you think a backwash is useful or necessary. Thank you