I think it's false economy to go for that one matey. The price is good but the sensors aren't long life like the 455 (2 years as opposed to 5 years). I pondered that one for a while then was going to go for the 455 pro kit but for the sake of another £40 I ended up getting the CPA1 kit (The probe kit is another £90 and the 12 volt charger is about £15 if bought seperately) Plus you get the gas sniffer. If you can stretch to it, I would go for the whole shebang as you'll need it from next April. Ended up paying £630 inc vat & delivery which I know is a lot but I've got everything I need (Till they come out with another way of separating us from our cash!!)