I have used all of these shades and my all time favourites are Raspberry rebel and Shocking pink. Shocking pink is a Hot pink colour with a slight blue under tone and Raspberry rebel is a pink with orange undertones.
I love to use a combination of both (SP 1: RR 3 mix) to dye my hair. Shocking pink doesn't take to the hair (Unless is it super blonde) as much as Raspberry rebel does and Raspberry rebel alone on my bleached and yellow toned hair turns more Pink coral than a Hot pink. Combination of these turn into a beautiful cerise colour and I am in love with it!
Only drawback I can mention of these is that they don't last long at all. Few washes (3-4) and this combo turns into a rose gold and with a few more (5-6) it will be a pastel peach. Not that I don't enjoy these colours but if you want it to be cerise all the time you have to dye it again and again with every 2nd to 3rd wash.
My process is; 1. First I bleach my hair. Use Olaplex to reduce damage and don't condition.
2. Next day, I use a paste of my dyes diluted into 1 part colour combo into 6-8 parts conditioner/ hair mask ( a good quality one..I use Schwarzkopf) depending on how bright I want my hair to be. (More conditioner means more light the colour will be. If you want a pastel colour use a LOT of conditioner. Just make sure to have very VERY blonde hair..preferably platinum if you want pastel pink. If you have a bit of yellow tones in your hair it will turn peach.)
3. Then I apply it to dry hair where I want to the colour to be. You can do whatever technique you want (whole head, highlights, lowlights, dip dye, balayage/gradient..etc)
4. I cover it up with a shower cap and leave it on for as long as I can. I sometimes do my chores while it is sitting in my hair. Minimum time I have done is 40 minutes maximum leading up to 5-6 hours. (Don't worry it won't damage your hair. In fact conditioner/mask will nourish you hair.) Then I wash it off in the shower and don't shampoo. I apply conditioner again sometimes if I feel I need some more, especially if I didn't let the dye sit in my hair for long. And voila.. the 1st step of your dying process is done.
3. Finally I make a similar colour combo paste diluted with conditioner/ hair mask and put it into a sealable container (such as an empty hair mask jar.) And use it as my regular conditioner during every 2-3 wash. You don't need as much product. Just a palm-full or a bit more if you have long hair. Because you are continuing to maintain the colour each time you condition with the mix.