Michael
Rich's suggestion is a cracker. Played Cardross a few times last year and was very impressed. Some panaramic views as well if that floats your boat. Also on that side of Glasgow you have Ranfurly Castle and Kilmalcolm. Haven't played the later but hear that its a good moorland course.
Re Tighnnabruich, my friend has a holiday house round there and he plays it quite often and says its an enjoyable hit if you like out of the way, basic, rural, old fashioned golf.
Niall