Having issues with the car running a bit lumpy when just plodding along between 1200 and 1800 rpm. after a bit of hunting MAF has been suggested fair few times. Thought i'd just change it out given they arn't huge money and i have no idea when it was last done.

seem to be 2 different ones,

http://www.eurocarparts.com/ecp/c/Vo...89bd3f5&000009

http://www.eurocarparts.com/ecp/c/Vo...c19846a&000009

The siemens one at £80 and the haas one at £50.

Is it worth spending the extra £30 on the siemens ones or will the haas one be ok?