Hello. Firstly, Clear Skin is much less expensive, about 50% less cost or more it seems. I have noticed that the recent Clear Skin kit works very well to keep your pores clear and easy to extract. I found this to be the case with Proactiv as well. At first I recalled noticing a different consistency in the cleanser and BP but it doesn't seem to be lacking simply because it has a more thin consistency. I think you must experiment a bit to see which kit suits your needs. I've found that both Proactiv and Clear Skin would leave my skin dehydrated if I didn't first apply a noncomedogenic cream or moisturizer after cleansing and prior to toning. I noticed that the Clear Skin Sensitive kit's toner doesn't have alcohol just like Proactiv's original toner doesn't contain alcohol. I personally prefer to avoid alcohol for my skin's needs. I suppose you could experiment by mixing the two Clear Skin kits, 24 Hr Original and Sensitive skin, or try out the one you believe better suits you first. I will admit that I miss the Proactiv toner for whatever reason. I felt that it helped my skin glow and look fresh, and that it doesn't contain alcohol, but does contain glycolic acid. I haven't tried the more recent Proactiv kit which is supposedly a reformulation to provide even better results than the original kit. I haven't tried the even newer kit which is touted to also include antiaging and hydrating benefits without additional skincare steps. I understand that Proactiv offers occasional promotions and that you can find if at discount if you search online, but then you can't be assured its a genuine formula because its not direct from the manufacturer to my knowledge. Clear Skin, on the other hand, can be found for an everyday price of about $20 at a reputable pharmacy and as low as $12-15 when found on sale or special.
Since all skins have different needs and reactions, I'd suggest that you try Clear Skin to see what you think. I can't say that any of the products don't work because my skin seems to remain clear for the most part unless I use a moisturizer which clogs pores or has an offensive ingredient. I am however still a fan of the Proactiv toner. The lack of alcohol and the glow it seemed to produce seemed to set it apart for me.
Hope this helps. Let me know how it works out for you and your personal thoughts on the products once you try Clear Skin as an option.