Oh girl, in my opinion, they don't compare. Dudley's drc28 is superior to Aphogee 2 step bar none. It smells better, it didn't turn hard on my head and it didn't break my hair off like Aphogee.
I must admit, when you wash out the dudley's drc28, you will experience major major shrinkage, but I liked it because my hair felt super strong. To top it all off, no breakage. Silicon Mix got the moisture back for me. I see why you cannot use it less than 6-8 weeks. It really works.
I found that they both are sticky and watery. I had to put a terry turby around my head to prevent it from drippng down my neck and that is a small thing to deal with to achieve strong hair.
The drc28 is definitely my hardcore conditioner of choice. I don't think I will ever change this one. A bottle can last me a little about a year and a half because I'll only be using it once every 2 to 3 months as needed.
you know if you feel the need to try it, go right on ahead, but I'm telling you, please have some moisturizing DC nearby to balance it off. I left my Silicon Mix on my head overnight just to make sure and it was fine. I don't think I needed to, but I wasn't taking any chances.
I had also henna'ed my hair within the same week - about 2 days apart. I definitely could have skipped that because of the detangling I had to do as a result, wow!