I sold my Touchpad & bought a Asus TF300 because I wanted USB/SD/HDMI........
all the things the Nexus 7 doesn't have
So unless you're desperate for a smaller device I'd stick with the Touchpad
One big advantage the N7 has over the TP - Weight!
I sold my Touchpad since the weight was annoying me - I wanted a slightly smaller form factor too. Having said that, I then bought a TF300 and after exchanging 2 of them with the worst cases of LCD light bleed I ever seen, I gave up on them & got a refund.
I was about to break the bank and get an iPad 2 or 3 when I saw the N7. Since then I have re-evaluated my needs for work and play and decided to give the 7" N7 a go at fitting into my already, large hierarchy of gadgets!
I know it seems strange to swing from using a TP for a year to thinking about an iPad to buying the N7 - but there is just something very appealing about the N7. Not to mention the price point too.
I loved the Touchpad, along with the HTC HD2 these were the most versatile pieces of tech that I've owned in years. Was sad to see both of them go, but time, tide & technology wait for no man. Time for new toys to distract me