OFC the Cisco Kit it better , but it is double the price.
We wouldn't run IPSEC VPN tunnels to the draytek boxes , but do use the pptp function a fair ammount ( We have about 20 of these out on client sites , and they are the best way of establishing tunnels for remote support if the sites does not have a suitable RRAS server )
We tend not to let our clients run P2P anyways so its not an issue
I am suprised you had a bad time with them - I've found them pretty good to work with , even if they might need the occasional boot , which in a SOHO situation isn't the end of the world )
for larger work I'd stick with watchguard / Nokia kit