I am in Ally's camp. Strandhill is hopeless in comparing favourably with Sligo purely on architectural merit. Sligo's water holes alone make that point quite clearly. The two courses are light years apart in quality, but not in fun. Taking it all in, I slightly prefer Strandhill to Sligo because its cheap and contains enough quality to keep me happy.
Ciao
I am curious about what Sean means by water holes. I assume he means the holes having the stream, as opposed to the holes nearest the sea, as those holes don't really have water in play. As I recall the stream was used to good effect to influence strategy, or perhaps dictate tactics when your strategy is failing. In all likely hood a stream won't be moved, whereas any course can add or move bunkers to gain the same strategic influence. Here's hoping that Ally continues to enhance Strandhill so that the strategic nature equals or exceeds Rosses Point.
My experience here is that I played both in the same day, and had essentially equal games for both plays. I found Rosses Point to be easy and uninspiring, and Strandhill to be more difficult and more inspiring.
Rosses Point was so easy that I took second in the individual Stableford, but my team was easily defeated in the team Stableford at Strandhill.
When it comes to fun, Strandhill beats Rosses Point hands down. If your course rating system doesn't include fun for the average golfer, then perhaps you should reconsider your course rating system.