I have not yet tried a modular (flip-up), but I can't say enough good things about my SHOEI RF1000. Make sure whatever you buy fits your head, and, if you plan on riding a lot and wearing your helmet, consider how many hours you could have your head stuck inside the thing, and spare no expense. At 100mph, 20000 miles would be a lot of time with your head in the bell, and of course you can't expect to average half of that speed for most of your miles. If it doesn't fit, or is uncomfortable, you won't wear it. If you won't wear it, even a $50 helmet is a total waste of $$$ and a P-O-S.
There was a helmet thread on here somewhere that had a link to a good study of the DOT and SNELL certifications versus the newer European certifications, and it raised some concern about how safe the DOT and SNELL certs really are.
You probably have a lot more options over there than we would here in the States in terms of what certs are available to you. The buying public's ignorance/lack of education here stipulates that retailers are not likely to carry much that is not DOT and/or SNELL certified here in the States.
The article/study had to do with sustained head injuries when wearing a helmet, and the fact that the DOT and SNELL standards still allow a significant head injury even though the helmet itself may survive due to the fact that the DOT and SNELL certs measure units (jouls?) sustained by a sudden shock (like the ball pean test?), where the European standards actually cert how well the helmet distributes the shock to lessen the severity of the head injury. It was an interesting read.
Of course there is always the obvious reality that other injuries incurred in an accident resulting in a head injury of sufficient magnitude to question a helmet's effectiveness may in themselves be mortal injuries anyway.
Get yourself a helmet you won't mind wearing everyday and wear it.
Don't worry about the other crap - people get struck by lightning every day.
Hey! I found the link to that article!
MOTORCYCLIST MOTORCYLCE HELMET PERFORMANCE Blowing The Lid Off 
