advice on alarms?

[d8mok]

I'm gonna be needing a new alarm for my evo, and quite unsure which are the best and best value. I'm currently considering a clifford 650 or toad ai606.

Anyone had experience of either? Also im looking for a good installer, near chesterfield, derbyshire.

The toad also comes in interactive form, so it'll send a text to my phone if anything happens. Is it reliable and worth the extra money? From what i can see on the net, the clifford can be had for about £300, and the toad is £250 - £400 depending if its interactive.

cheers