Ryanair 732's are the worst aircraft I have ever flown on. The seats are falling apart and they're really noisy. However I suppose its worth experiencing the once as it will make you smile next time a shining new 738 turns up
If you want to get on one they are used on most flights from UK regional airports to DUB
or if you are close to STN
(or Glasgow) the PIK
route is usually always a 732 as well (from my experience).