The @roux press is still the most efficient press I have seen. I can press small amounts in less than 5 minutes with very fast warm up time and little to no waste.
The 10-Ton Press I bought is a beast and can flatten about 1/2 zip at a time in a nylon bag. I'll try that some day, but I like the 2-3 gram pucks in parchment paper. Also efficient, but slow to warm up.