I need a new Sat Nav

My   Tom Tom Sat nav just died, it was a very early model,

I have the chance to buy for £89 either a Start 20 with free maps or an XL IQ UK. with mapshare and instant corrections

I a not IT savvy and dont want to be forever paying for add ons and revisions -    I only use it a couple of times a year.

Any   advice would be appreciated. I  have to decide tonight as I am off with the van tomorrow.

Thanks -  

Both are £89 both 4.3 screen.