I have to say, I also come down on the side of the Desiro. The Electrostars aren't *bad*, but the Desiros are just brilliantly trains, designed and built really well in almost every respect - and the respects in which they're not as good as I might expect (eg seat padding) the Electrostars are just as bad at, if not worse.
Maybe it's also down to the TOC (SWT IMHO are great at interiors as well as general maintenance), but whenever I've travelled on an Electrostar, I've never felt that high-quality feel I do with a Desiro.
Maybe it's also down to the TOC (SWT IMHO are great at interiors as well as general maintenance), but whenever I've travelled on an Electrostar, I've never felt that high-quality feel I do with a Desiro.