I ordered the Nikrans NS-1100GW few weeks ago to this steal reinforced building, where my office is based to enhance O2 poor coverage. It came to UK really fast. To be honest, I was surprised, it took about a week.
Now I put it up temporarily until we have the new office area finished, but when I started it and tried my phone, it was a huge success! The employees really like it, because it boosted the signal to full bars and now we have super download speed. No more O2 signal issues! The thing that we like most is that all my colleagues can use this amplifier at a moment.
As myAmplifiers has a wide variety of boosters I also ordered one more booster for my house in US and I am looking forward to install it there. It's LCD-250 AWS, which, I hope, will resolve my poor signal problem. I need it for all providers too, so it looks suitable. Looking forward to try it!