The first Orval is a stone cold classic Trappist ale. The brewery makes only one beer and it's a very reasonable £2.90. It's an idiosyncratic beer. I think it's one that you can immediately tell is Orval, as it's so very dry and peppery. It's complex, refreshing, slightly citrussy and very hoppy, but not in the way American ales are. A true Belgian legend.
Next, a recent favourite is Vuur & Vlam (£3.50) from Dutch brewers De Molen. I absolutely love this beer. It's a gorgeous, hazy, cloudy, fruity and hoppy IPA. It has the tropical fruit element that American pale ales have, but it's not too overpowering, the bitterness and fruitiness are in perfect harmony. Just a lovely brew.