One word to describe Lebara?

Good.

Value

Value. (A fair price for a decent product. Lebara may not be perfect but it does the job for me and for perfection I'd expect to be paying a lot more).

Comprehensive

"Rising"
In the sense of "a rising business" - I expect Lebara to become a bigger name, because they are offering good functionality at a competitive price - ie, it's a customer oriented business.

Martin Trusted

value
has been a great plan for my needs with good coverage and plenty data for a really good price

Reliable

Perfect, no problems