Used to stock the Timex ones when they first came out, one thing I would say it that the quality was terrible (this was a couple of years ago though). Many were faulty before they could even leave the store and the setting of the hands and numerals was pretty shoddy too. Don't know what they're like now, hopefully it was just setting up problems for Timex at the time and they've improved now. Just have a close look at any you buy. Numbers on squint and misaligned wasn't uncommon.
(Sorry not trying to be a killjoy! Just warning you before you spend a bit of cash).
Cheers,
GB.