Personally I don't understand how people can buy a BC without trying it on. It's an expensive purchase - the 1.5 hours each way is absolutely worth it.
I made several trips to an area about an hour away researching my purchase.
I found I absolutely, strongly hated the feel of all the Aqualung ones. Now, that's me - others are happy with them. I went for Oceanic Excursion just recently. Aqualung Dimension was the first one I was particularly interested in researching online. Had I gone with that, sight unseen, I would have been very unhappy.
If you're not travelling with it then you probably can rule out the travel oriented ones.
Plenty of threads on the Aqualung i3 inflator on here - general feedback is positive.