In reply to Oujmik:
Exped 4 is a great compass - I like the large base plate, and mine has lasted a long time, though suffered the reverse polarity issue earlier this year so has been replaced. This was my fault though for not thinking about where it was stored! Though despite it being about 10 years old, it was replaced FoC by Silva even though I never asked them to (returned it to store to see if it could be re-magnetised / calibrated).
Cheap compasses never last or work as well imo, and always seem to take an age to settle - a real issue during nav in crap weather when your patience wears thin.
A lot of the Sunto compasses don't have romers as well so watch out for that! Though I've a friend with one and it does seem like a good piece of kit, and their orienteering / racing compasses are definitely the match, or better for Silva.
Type 54 is excellent but at £90, I don't think it's worth the extra cash. If you need a prismatic compass, get a mirrored one, they are generally easier to operate for sighting anyway. Having a disc, rather than a needle it also takes longer to settle.
Cheers,
Stuart