Not sure what you're looking for now, cirus5, since you seem to jump from Piranha to eKit to OneSimCard - my advice is to test them all and pick the one you like best
I like Truphone as well, though it is probably the most expensive of them all.
However my experience with Piranha has been quite good, I just ordered a second one and tried to use it in the Netherlands the past 3 weeks. At first it wouldn't work, but after an evening mailing back and forth with Piranha's support, they managed to get it working. I found them pleasant and helpful.
As stated many times in these forums, and a lesson learned the hard way by some: NEVER top up a higher amount than you are prepared to lose: these companies come and go!