Most of it is just gonna be DJ looping stuff . The Korg Trition has a sampling function but it's not cheap .
You could look at used gear like the Ensoniq ASR10 which came after the EPS series .
The Emulator III from Emu systems , it's an older synth sampler with a lot of capabilites and the price has gone down alot .
The Roland S-50 is another good one if you don't mind abit of a low-fi sound - it's a 12bit sampler .
Their is the Roland VP-9000 Vari-phrase sampler but it had alot of bugs and never worked right ,