Agree with Hugh's comment re AVForums. I bought a Samsung just before Christmas - it's 48", so bigger than you're looking for, but it is an excellent TV. And the Smart Hub works really well.
Whatever you buy, take the time to set it up properly. There are some great guides on AVF to help.
Quick thought - AFAIK, both John Lewis & Richer Sounds include a 5-year warranty as standard.. I got ours from JL - usual high-quality Customer Service, their one flaw is their delivery options are too limited for this day & age - they only quote 7-2 or 2-9 options (or did at the time).