looking for some advice on the best external antenna setup.
I live in a rural area, but there is a Three mast not too far from me and after years of suffering 0.5mbps ADSL i was pleased to discover i could get a good 3G signal. I have a Zoom router (best 3G router i have tried) and a Huawei E353 dongle (with a connector for an external antenna not currently used) connected to the router and situated in an upstairs bedroom window. Up until recently i was getting speeds of ~5mbps down, ~1.5mbps up and a ping of ~70ms.
However, the old single glazing window it is situated in was replaced a few days ago with a new double glazing window. This has had a big impact on signal strength and performance, probably due to the invisible thermal coating on the glass, and i don't want to be hanging the dongle out of the window when it rains!
So... i have been thinking about getting an external antenna for some time, but now i think im going to have to. The question is what? I was thinking a directional panel antenna would be best, but i just spoke on the phone to Solwise and he thinks an omni directional antenna would be better. The reason being that i cant see the 3G mast as there are trees etc between me and the mast. What he said seemed to make sense, but i have read so many different thing on the internet that my head is spinning.
Would people with knowledge and experience suggest here in my situation?
Many thanks in advance