Voice Effect Hardware Consultation

I need clear, unbiased advice on which dedicated hardware can give me professional-sounding voice effects. The goal is to identify one or two devices that are easy to operate, readily available for purchase and suited to both live use and home recording... (Budget: $10 - $30 USD, Jobs: Audio Engineering, Audio Mastering, Audio Processing, Audio Services, Electrical Engineering, Technical Writing, Voice Over, Voice Talent)