Both, the Behringer and the Ibanez Soundtack pedals, are great bang for the buck. I got an old Thrash Metal Soundtank for dirt cheap and it is a really good sounding pedal. The only thing I dislike is the footswitch, which does not work really precise. Looking for a Soundtank Delay.
I got a Bastl Kastle 1.0 the other week for a very reasonable price. It is my first actual synth (besides a really primitive one from Monotonic Labs) and it really got me into experimenting with it. Planning to get a 1.5 as well, as there seem to be added synthesis modes in the 1.5 and both, the 1.0 and the 1.5 can be connected as well.