[dyselon]

The DE0-CV is a bit more expensive, but I think it's probably better than the Nano for the FPGA 101 type experiments. It's got more on the way of switches and LEDs, and the buttons are a lot easier to get to. I have both, and I had a lot more fun with low level learning activities with the CV than the Nano. Moving past that, I also enjoyed messing with the VGA and SD card peripherals more than the ADC and accelerometer, and also found those easier to add on after the fact.

[blackguardx]

I added a hand-made VGA "shield" to the Nano and used 3 digital I/O pins to get 3 bit color. I don't have a picture of the add-on board handy, but you can see a breakout game I made here: http://jrward.org/breakout.html

[dyselon]

I also made a VGA shield for my Nano! I got a couple pictures at https://mobile.twitter.com/dyselon/status/648020130471899136

That project is actually kind of what convinced me to go ahead and buy the CV. It was fun, but it just felt like a lot of work making things that I could just already have on the board.