you need what i need , I ask same question on lot's of forum and every user have has his theory , best choice of normal monitor is 1084s or 1085s , if you wish LCD i buy last week on ebay.co.uk only monitor who have 100% great picture with amiga's : samsung syncmaster 741mp 17" 4:3 (have scart and everything you need) , probably there is some other model who is good with amiga's but 741mp is tested and everyone who have it told me that picture is great
you can buy it on UK ebay there are always some for selling ... i buy mine last week for 13gbp + 46gbp for shipping
so this is what you need