(Yes yes I know there are 10001 posts about this on the internet, but this one is special - its mine ) Ok so I might have some money burning a hole in my pocket and despite also wanting to save for silly expensive lenses (300mm f2.8 !) I've also a range of products/addons that I've also wanted to add to my current setup to allow it to expand (downside of building up from scratch is a lot of parts needed along the way). Plus I'm unlikely to do any big earning so there is a risk that some savings might get eaten up with every day living stuffs. So with that in mind I've taken a look at the 7D as an option to upgrade from my 400D - I'm not in two minds about the choice of camera body; I want the video mode; I want the crop sensor and I want the silly complicated AF (as well as noise control). However we then come to the addons to the (possible) purchase itself; where there is less info abound. 1) Batterygrips; I've been looking around and some 3rd party ones are offering a lot more features than the standard canon version. This is interesting since the build quality is also not dire on many of these (so I read). However I don't live in portrait mode (I use it when I need it of course) and further one big factor that the 7D has that I do want is the weathersealing aspects. With that in mind I suspect that best is going to remain the, more expensive, canon version - unless anyone here can suggest others? 2) Batteries - an area where a saving might be possible with a good £20 difference between canon and many of the 3rd party versions. The chips though is one point I want to keep for the accurate power rating. So are there reliable 3rd party options that keep the nice chip for reading the power levels to the camera? 3) Memory cards - I've some feeling that the 7D does not use the same type as the 400D (I'm bad at mixing all the memory card name types up....) Adding of course a nice E1 wriststrap and OPtech pro neckstrap to all the above as well So far as I can work out that is what I'd be adding to the purchase (I'm very used to battery grip and the strap setups with my 400D and would seriously miss them were I not to have them on the 7d). So first up anyone able to give me some pointers and maybe push me over the edge with the purchase choice?