Sloshes are strong and easy to cast. I use a Slosh30 and it handles pretty much everything that you throw at it. It's a very dependable reel and if it's rough ground you mostly fish I would go for this.
The Slosh20 is a smaller version of this and from what I've heard is every bit as good. If you are after distance on smooth to medium ground I would go for this or the 7HT.
In my opinion the Slosh 20 and 30 reels r excellent especially for rough ground work, they are very easy to cast with and are very robust,u can not go wrong with one of these reals they should last you years.
Have a sl20 and sl30. Both great reels, 20 must be about 5 years old now and still running like new with minimal attention - enough said! Typically use 20lb line on sl20 and find it dead on, have never tried it with 15lb line so don't know if they become a bit lively with lower line diameters.
If you intend to fish clean beaches sl20 is quite bulky, would be better with a 6500 sized reel but if you are looking for one reel to cover most situations then it is hard to beat.
i use mine with 20lb line and its spot on. once tried it with 14lb line and it was sh**e, and i use it with 20lb of the beach and rocks. if you want it for the beach get a penn 525super mag or a normal mag there both ok.