I purchased http://www.lovehoney.co.uk/product.cfm?p=16053 as a little bit of an impulse buy. It was our first plug but I find it too small. It just does not seem 'filling' enough, seems one is a little more experianced then I thought I was. The OH is very new to it and he enjoyed the slimline.
What's the next step up? The choice is a little overwhelming.
We went for a Doc Johnson 'medium'plug for the same reason, but found it to be a big step up. It is a great plug but it will take some practice to be able to take comfortably. I'd suggest looking at the dimension of a few options and try to find something in between the BB one and this