Some reviews on the G19 keyboard
here
People seem to think it's a bit overpriced and plastic for the cost. I'd suggest, even though it looks a bit 'radical' (love that word) to try a Cyborg V1.7. From what i've read it's a really solid keyboard, metal coated WSAD, spacebar and arrow keys for gamers. Custom backlighting for different sections of the keyboard, multimedia keys up top and I believe 12 macro keys.
Definitely worth a look if your gunning for keyboards in that range.
As for the mouse I actually own an MX performance darkfield wireless mouse. It is quite good, I like the lower thumb button for expose features (it's so good once you get used to expose) and the left side of the mouse is generally quite nice. The scroll wheel can be put into a free spin which is surprisingly useful for long scrolls.
Thing with the mouse is the right hand side of it isn't very good, ie where your pinky goes. I have medium-large hands, nothing out of the ordinary and I fold my pinky back in on itself because of the mouse shape. Feels a bit awkward at first. Also the left/right mouse click which after 4 months or so is still fine I always thought it could feel more responsive. It clicks fine, but i'd prefer something more definite if you know what I mean. Aside from that there is the battery life which is pretty poor the area where you plug it in to charge (front of the mouse) always feels a bit tacky, like you could easily break something because it requires a little more force than i'd like to put it in. It can be charged whilst in use though. I imagine the G700 to be fairly similar looking at it but i've read no reviews.
Instead i'd suggest something more like a Razer Naga (NOT the silly one with 12 programmable buttons, but the one with 6 buttons around the thumb area). I'm however not going off personal experience here. The mouse looks nice enough and has nice placement of buttons from what a friend has said. I'd go read a bunch of reviews though.