Yesterday I had the misfortune of travelling on 390123 - my first trip on a refurbished Pendo. Dreadful. As if Pendos weren't claustrophobic enough! The wide high seat backs make it virtually impossible to see outside unless you've one of the rare window seats with a forward view - and even then you can see hardly anything through the windows ahead on the other side. Even in bright sunshine the inside feels gloomy. Pretty much kills the joy of rail travel IMHO - might as well be in any old metal tube anywhere.
For many years when I've been going to London from Manchester, I travel via Sheffield. The meridians get a lot of bad press on other threads, but I think they're a massive step-up from the voyagers. In fact, I quite like them. Loads of tables, wide and comfortable seats, wide windows, narrower spaces between windows, feels spacious with plenty of natural light. Beats a cramped, claustrophobic Pendo hands down every time. And not only is going via Sheffield the same price, but it permits me an earlier arrival into London than Avanti off-peak - plus I get to enjoy the great scenery over the peaks. What's not to like!