That is a slightly older version of the one I have.
New models can be a lot less expensive from the USA, especially if you know someone who might buy one for you and send it as a gift to save on tax. However older models tend to reduce in price here in the UK until it makes more sense to buy them here. A UK company called cameraking seem to have very good prices but it would be a good idea to see if you could buy from an advertiser/supporter of SD just to put business their way.
The Energizer Lithium batteries are a good investment - they seem expensive but should run for a year in your camera. My experience supports Bushnell's claim of 10,000 photos on a set.
Also be aware that trail cameras are, basically, a cheap bit of plastic with some sensitive electronics inside and so when you leave them out in all weathers they do have a finite life. I think many are designed for drier conditions in the USA and so don't cope well with our very humid and wet conditions. Given that don't expect them to work for ever - you might get lucky but the average seems to be about 2 years and many people get less than that no matter what make or model they buy.
In terms of what to buy I like the newer Bushnells for their faster trigger times - yours is older and somewhat slower. For me a fast trigger is important and I would have missed a lot of photos with a slower camera so I've gone with Bushnell. Bushnell also get a good reputation for their sensor and I really don't get any false triggers. If you have big money and want the best then Reconyx have a new camera due "soon" but it will probably be in the £500 range and that is far to much money to leave strapped to a tree in my view. Beyond that the choice is to "pick one" but keep in mind you are going to strap it up a tree so it might be stolen and that it probably has an average life of 2 years or so.
In my view "low glow" infrared cameras have the potential to scare deer but it seems to very much depend on the deer. The "no glow" cameras use light further into the infrared and seem to cause less or no disturbance to the deer as they simply can't see it, however they tend to be more expensive and to have reduced flash range. Your 435 probably counts as "low glow" as does my 437. Last year's model 476 is "no glow" and might make a good value purchase. Be aware that it is physically larger than your 435 and takes up to 12 batteries.