Hi nini,
I am a closet rock/blues guitarist and would suggest, depending on what you want to spend, looking at Roland and ZOOM products. I have a number of Roland products I paid though the nose for (amps and effects), but they have never let me down and sound great. I have also tested a number of ZOOM products some of my friends use and I found them easy to use, intuitive, and from what I understand, pretty inexpensive.
I do not follow the accessory industry like I used to, but I think these two brands may be a good place to start your search.
Boosch.
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"It tastes like....burning!" Ralph Wiggum