Jags,
All the racks I listed will fit to your bike and will work well for you. The low riders keep the front weight lowest and centred around the front axle and steering axis, which is supposed to be good for bike handling. The others have the option of putting the panniers higher and more forward of the steering axis, never tried this but Vik recommends that type, and they also have a top shelf for more luggage.
The steel ones should be more bombproof in the event of a say a collision with something.
The low riders fit to existing mid fork braze-ons, the others fit to the brake bosses which might be a bit more of a fiddle.
My current favourite is the Tubus Ergo. I have the Tubus Tara and Thorn racks as well.
I have sold on my Blackburn and Bor Yueh aluminium low riders as they were not very easy to fit the panniers clips onto, and were certainly not as strong as the steel ones mentioned.
Most of these racks can be sourced from
SJS or
Spa who will certainly ship to Eire. Vik's favourite is available from
Carradice who also export to the world.