Whoa, whoa, looks like some seriously controversial stuff. :-)

• What size Tikit do you have?
• The weight seems odd: maybe because of your Schlumpf? Another data point: decked out with fenders, rear rack, lights, Greenspeed Scorchers, a kickstand, a standard saddle, and a cover bag, my tikit comes to a bit over 28 pounds. It's a size Medium with certain size Large elements, so it's about 25 pounds without the crap.
• The trail for a *typical* bike is about 2 to 2.5 inches. The Brompton's trail is, according to CyclingPlus, 24mm (0.945 inches). On Yak, measurements of the Tikit have come to about 35mm (1.378 inches).
• I don't know what the official procedure is for measure effective top tube lengths. Claims about the S-type, for example, having a longer effective top tube than other Bromptons seem to me to be based, in part, on the diagonal measurement due to the low stance of the handlebars, which may not be an appropriate comparison. At any rate, even the S-type felt stunted to me compared to a medium Tikit. My experience suggested that most Bromptons were about the same size as a size-small Tikit. As the Tikit can have its stem modified to any length you want, and comes in different effective top tube sizes, this is gonna be a hard comparison to nail down perfectly.

What is your opinion on?

• The Tikit's standard part usage vs. the Brompton's proprietary ones.
• The Tikit's crummy fenders compared to the Brompton's pretty ones. Can the Tikit take the Brompton's fenders?
• The Tikit's customization options compared to the Brompton.
• The Brompton's easier packability.
• Covers.
• Can the Brompton take the 40mm Greenspeed Scorchers?

My extended stay here in Rome has reminded me -- hoo boy -- of how nice it is to have standard parts on a folding bike. The cobblestones cause all sorts of normal bike things to wear at a faster rate, and I've done various cheap repairs and replacements on the bike. Certain of these parts were custom on the Brompton; I don't know what I'd do if I were in that situation. I commute every day on the bike. No one in Rome sells Bike Fridays or Bromptons, and in fact I believe I'm the only person in Rome with a Tikit. I'm on my own.

BTW: several dealers sell Dahon but, get this, if a Dahon custom part breaks, the Dealers aren't permitted to repair it; in fact they can't even get parts from the company. Instead they are required to ship the bike back to Dahon. I have a Dahon in Italy with a missing piece, and will get one from Thor when I go back to the US in a few months. Bring it with me next time I return to Italy.