Right, sounds a bit of an odd topic but it's something all of us face at some point in time, the bulk of our kit... 
I may be heading off somewhere for a few months, backpacking round with a 35l bag. This means space is at a premium, yet I don't want to be found wanting camera kit wise! At the moment my kit is:
400D
Tokina 12-24 f/4
Sigma 24-70 f/2.8
Canon 75-300 IS
Canon 300 f/4
(The 75-300 goes on holiday and the 300 f/4 is used for more photo oriented trips/short stays)
As well as a small tripod for walking use.
The problem is it takes up too much space as it is, first I wondered whether to sell as much of the kit as possible and get a GF1 with 20mm and 45-200mm lenses, however I just dont think I could get on with it, it's not wide enough or long enough and going to something without a viewfinder would be odd. It does have the benefit of being much smaller though.
The second option is to replace a few of the lenses with smaller versions, giving me not much difference in quality/range but a reasonable size saving. For that option, after looking on TP and having a think I've come up with something like this:
400D
Samyang 8mm f/3.5
Tamron 17-50 f/2.8
Canon 70-300 IS
The Samyang is a manual focus fisheye and pretty cheap/ reasonably small for those times when wiiiiide is needed and for skyscapes/starscapes with a bit of correction.
The Tamron 17-50 to replace the Sigma 24-70 and Tokina 12-24, with the 70-300 IS replacing the 75-300 and 300 f/4 (Almost as good IQ as the 300 f/4 but much smaller and more versatile, however losing a stop).
So yeah, that's my thinking, any other suggestions as to lenses to look at to get the optimum size/IQ ratio? GF1 the much better idea?
Also what is the 40D like size wise in comparison to the 400D? I find the 400D a bit annoying sometimes with its limitations and the 40D may be a benefit, although it doesn't have video which the GF1 has.

I may be heading off somewhere for a few months, backpacking round with a 35l bag. This means space is at a premium, yet I don't want to be found wanting camera kit wise! At the moment my kit is:
400D
Tokina 12-24 f/4
Sigma 24-70 f/2.8
Canon 75-300 IS
Canon 300 f/4
(The 75-300 goes on holiday and the 300 f/4 is used for more photo oriented trips/short stays)
As well as a small tripod for walking use.
The problem is it takes up too much space as it is, first I wondered whether to sell as much of the kit as possible and get a GF1 with 20mm and 45-200mm lenses, however I just dont think I could get on with it, it's not wide enough or long enough and going to something without a viewfinder would be odd. It does have the benefit of being much smaller though.
The second option is to replace a few of the lenses with smaller versions, giving me not much difference in quality/range but a reasonable size saving. For that option, after looking on TP and having a think I've come up with something like this:
400D
Samyang 8mm f/3.5
Tamron 17-50 f/2.8
Canon 70-300 IS
The Samyang is a manual focus fisheye and pretty cheap/ reasonably small for those times when wiiiiide is needed and for skyscapes/starscapes with a bit of correction.
The Tamron 17-50 to replace the Sigma 24-70 and Tokina 12-24, with the 70-300 IS replacing the 75-300 and 300 f/4 (Almost as good IQ as the 300 f/4 but much smaller and more versatile, however losing a stop).
So yeah, that's my thinking, any other suggestions as to lenses to look at to get the optimum size/IQ ratio? GF1 the much better idea?
Also what is the 40D like size wise in comparison to the 400D? I find the 400D a bit annoying sometimes with its limitations and the 40D may be a benefit, although it doesn't have video which the GF1 has.
