Cheers lads, well I've been using a slosh 20 with sufix 37lb line and fishing the rough stuff. It will hold approx 160 yds which I have found is plenty (except of course if you're unfortunate enough to snap the ine at your rod tip when pulling out of a snag) - because to be fair unless you are a BIG chukker, I'd say you'd still have 40-60 yds or so on the reel after casting - bearing in mind most people who say they 'just lobbed 100yds' are, in reality, casting about 60 or 70yds.
If your emptying 160yds of 0.50mm line with a big cod bait on your doing bloody well and should probably be challenging Big Danny!!
I'm not averse to a 30 size reel, I just prefer to keep things as small and light as possible - that's just my personal preference I'm not saying that's right or wrong. It sounds like the saltist 20 is the answer to my requirements - thanks for the input lads, much appreciated.
Happy hunting!
Cheers
Dave