A picture would help in identifying the underlying manufacturer. Many big stores sell their own brand which usually are rebranded bikes, eg quite often Dahons under another name. Pinnacle does not ring any manufacturer bells with me.
You know, once you get bitten by the folding bike bug, they will take over.
It is worth considering that your folding bike can be your only bike - once you no longer worry about the peer pressure baggage.
With that in mind, plus that you are keen cyclists, you might have a look at the Airnimal Chameleon - expensive but good. Reach is another one that have a road bike setup version. They also have a very quick flatbar bike, the Joey.
Or if you're willing to forego drop bars, the Birdy is hard to go wrong with. IMHO it is a better option than the Brommie although Brommie reigns supreme for folding compactness. But the Birdy is not far behind.
Bit lower on the scale is the Xootr Swift, which has earned a very loyal following. That can be converted to drop bars quite easily (costs extra, of course).
So add that to your considerations - can your folding bike be your only bike? I have gotten rid of all my big-wheeled bikes and now have 4 folders. My Xootr Swift is my fast road bike and easily keeps up with the roadie bunch (always astounding them