The two products that I am extremely happy with so far are the Studio Powder brush (above) and the Studio Complexion Brush (below).
These are the first ELF products I have ever used and the first non-mac brushes that I have used. I am extremely impressed with the studio brushes (I haven't yet tried the regular ones that I purchased). Each brush is only £3.50 which is a bargain considering the quality of them is excellent. The brushes are made of Taklon so are cruelty free and the handle is sturdy and a good length on both.
The powder brush is a flat top brush like a mini kabuki with a long handle and is is very soft. It looks pretty much like the picture on the website (sometimes things turn up and they look nothing like as good as on websites) and the bristles are flat and even. This one is for all types of powder, powder foundation or minerals. I have tried it with my mineral foundation and it really is simple to use and better at buffing it in than my Bare Escentuals kabuki which I think is because it is flat rather than rounded, also the bristles are really dense so you get a flawless finish. You can also apparently use this wet to apply liquid foundation or to apply blush or highlighter, but I just plan to use it for loose powder or mineral foundation. I would recommend that you get this brush over any of the others as it is my fave, I might even buy a backup for £3.50!
The complexion brush is my second favourite, the bristles are not as densley packed so they are good for bright or dark blush or bronzer as it doesn't apply them too heavily, if you are using a pale colour I would use a denser brush. This is even softer than the powder brush and is not scratchy at all. I prefer my Mac blush brush but for £3.50 this is an excellent brush and a close second.
I will update with the professional brush reviews as I use them.
The other product which is rubbish is the eyelash curler which I bought to replace the Mister Mascara one I currently have, but the ELF one doesn't curl the lashes at all and is therefore completely useless. Do not bother with that!
Cheryl - Girls Aloud Lashes
These are wicked! I love them, super sexy.
The glue they came with was a bit weird, it dried so quick (a lot quicker than any other eyelash glue I have ever used) so I had to put some more on and it took 2 goes to stick them on. Derr I need some practice!
I tried them on with MeMeMe colourama cream eyeshadow in the pink shade (which actually does last the 8 hours it claims to) and Mac black fluidline on the top lid and Barry M white kohl on the lower waterline. I had my eyebrows threaded at Glow in House of Fraser yesterday and THANK GOD these girls are a miracle go check it out Glow Beauty Bar.