I had good luck with the Coconut Suave, but hated the Lilac Lavender whatever the heck. The purple looking one. Everlasting sunshine was actually my very first cowash, but I actually used quite a bit of it on my dogs lol. I did like the Burt's Bees very Volumizing condish, but never tried the As I am line. I wouldn't say my hair is tangly thou, hopefully some of the other users will chime in with product recs.
Meera, I'm a fellow cheap curly! I have the same rule as you - SM is as expensive as I'll go! Lol!
I LOVE GVPCB! But I also use Tres. Nats, which has decent slip for a cheap-o. I also like Vo5 Shea Cashmere. Suave coconut has been good to me, as a co-wash or LI.
SM has not given me good slip. In fact I use their condish as a LI - LOVE it for that! They just came out with a detangler, but it's only at a few Target stores as of now, I think.
I hear great things about yes to carrots, but have never tried it.
If you want a poo that is very gentle, I love SM's moisture retention poo! It feels like a cleansing condish to me, almost.