What is the BEST modchip and why

[killzusall]

I am currently a slide card/swap magic user, have managed to copy successfully all attempted games, just needed to learn a few things well on the way now. next step may be to get a modchip

so would like to know

1. which is best
2. why its the best
3. and apart from the annoying swapping of discs, why its better than swap magic

btw been eyeing up the new DMS4 Pro or lite, mainly cos its the latest and sounds impressive with HD loader capabilities etc....