Large Wooden Buildings

I want to put in an office large garden, probably 4m x 4m x 6m or 7m and have almost everything down to two guys ...

Ones a wood like this:
http://www.weatherstrong.co.uk/newengland.asp
(Pic size: http://www.weatherstrong.co.uk/images/newengland/retreat_main.jpg)

The other is a single type like this:
http://www.insulatedbuildings.co.uk/eco_ranges.shtml
(The effect of a wood, but much bigger)

Firstly, has anyone had experience with products from these suppliers?

One of my main concerns is security, I run a mail order business from home and this is my office, warehouse and packing room so it needs to be secure.

Wood can have double glazed windows (wooden) windows and a wooden door, but the modular DG PVC windows and multipoint locking doors, and I think it would be safer, but do not know?

The wood will give a mezzanine storage area because of its height and that is better insulated and isolated soundproof, but only on one level.

Has anyone had experience building such as this, compared to the other?

Anyone confirm if the modular will be more secure?

I have extremely heavy metal cabinets to go there, the people of wooden construction that they put extra supports under the floor, but the people say no modular problem because they have customers using the same types of freezers and cold storage rooms.

The prices are roughly similar, although slightly more wood.

Sorry to cast more than one question here lol!

All comments are welcome

Cheers

Jim

The first would be ridiculously more expensive than second.Either would be good for both of you might actually be purpose.They your secure.If in Britain that the first may need planning permission.Your neighbors will not be happy with you as They are a very large.The wood is beautiful, but I would go for the modular as they can decline if the basic moves or soil erosion.Modular requires less maintenance and is more durable and more difficult to penetrate ( all are marginal if)

If you are really serious about office furniture you need something permanent, like The Garden Office <a href = InsideOut "... http://www.iobuild.co.uk Flag

Wood, and lots of it.

A conservatory sounds better.