What first made me pick up Maybelline's Lash Sensational was the wand. It is IDENTICAL to Roller Lash; from the slight curve, to the short 'hook' type bristles on the underside (designed to latch onto the lash and give extra lift). It is a total doppelganger on face value, but on use, slight differences begin to surface.
|Maybelline's Lash Sensational|
|Benefit's Roller Lash|
Roller Lash gives a much more defined lift and curl to lashes than Lash Sensational; you could get away without curling them when using Benefit's mascara, but I would definitely recommend it with Maybelline's. Another difference was in clumping. Lash Sensational is far gloopier than Roller Lash, ultimately effecting the overall quality of the mascara; while it definitely isn't awful for clumping, it doesn't quite give the separation and definition that Roller Lash does.
Both formulas seem quite wet but dry quickly, meaning it's easy to layer up to create your perfect flutter and control the level of volume desired. When using Roller Lash, you could easily get away with one coat of mascara. However, Lash Sensational definitely needs at least a couple to compete with Roller Lash's first coat- this is where the price difference becomes most evident.
Overall, Lash Sensational isn't half bad- it does lift lashes, separates them quite well, and creates a nice, natural look. However, it takes more effort to get to this state than when using Roller Lash. Benefit has created the higher quality product of the two, and if you have the money to spare, this is where it's better invested. Yet for £8, Maybelline is worth trying out and definitely gives Roller Lash a run for it's money; a good effort at a dupe that's just lacking the perfection of Benefit's formula.
Which of the two do you prefer? What's your favourite mascara dupe?