And here they are, wet. I'm not sure if these comparison pics really show how much they expand, but they do. Especially the beauty blender. This expands the most out of the 3.
And here is the Real Techniques sponge, which has the pointed top, but has a flat edge instead of a rounded bottom.
The B. sponge and the Real Techniques ones are fantastic sponges and they are way cheaper than a beauty blender which is £16 (the B. sponge is £4.99 and the RT sponge is £5.99 - although both are reduced on Superdrug right now!).
The B. and the RT sponges are a very similar to each other in texture but different to the original Beauty Blender. The RT and B. sponges are denser, firmer sponges. The Beauty Blender is softer and springier and expands way more.
My overall favourite is the Beauty Blender. I love the texture of it and I love the overall effect it gives me on my makeup. However, the other 2 sponges are also fantastic and I rotate all 3. I also prefer the shape of the BB/B. sponge, as I like the rounded bottom for finishing my foundation, rather than the flat edge.
Have you tried the Beauty Blender or any dupes? I'd love to know what you think.