Choosing a circular saw

[thomaspassmore]

Hi Guys

I want to make a shelving unit from MDF but have nothing to cut it with.
I am a pretty budget carpenter, but I have made similar shelves using pine from Jewsons in the past, so I am confident I can make the shelves.

This time they need to be deeper and they are going to be a little more complex so i need to be able to cut long straight lines in MDF.

I have read that a circular saw with a decent blade is the way forward, but can anyone recommend one (Im on a limited budget). Are any of the following any good?

http://www.screwfix.com/p/makita-5604r-165mm-circular-saw-240v/87642
http://www.screwfix.com/p/dewalt-d23550-gb-165mm-circular-saw-240v/79973
http://www.screwfix.com/p/dewalt-d23620-gb-1150w-184mm-circular-saw-240v/58155
http://www.screwfix.com/p/erbauer-erb402csw-185mm-circular-saw-230-240v/95825

Thanks for the advice

Tom

 

[big-all]

any off the first three
although the first 2 are local pick up only so probably limited availability

 

[thomaspassmore]

Thaks for the quick reply
So I understand, what's good about those that I should be looking for, and what's the problem with number 4?

Also what blade would be best for mdf?
Cheers

 

[big-all]

own brands can be ok but no follow up support or spares

all three branded will be very close in operation
i would think all will have ready available blades but do your homework

any blade will cut mdf
more the teeth cleaner the cut but greater the load

 

[cajar]

screwfix import chinese stuff and rebrand it as erbauer. have tried their stuff and it always ends up on its backside so decided to avoid it altogether. worst was 3 tile saws where the blade was not running true (3mm deviance), gave up and bought a brand name instead.