‘Best’ is a relative word, so here is what seems to be the Best –
‘The MSI GT80S, the successor to the highly rated GT80 Titan. This one comes with a full Cherry MX Brown mechanical keyboard and not one, but two 8GB GTX 980 GPUs in SLI, powering an 18.4-inch 1080p display. You will also find an Intel Core i7 6920HQ Skylake CPU under the hood, along with 32GB of DDR4 RAM, a 1TB HDD and four 256GB PCIe SSDs in RAID 0 for super fast operation.
Price is £3989.99. Available for pre-order at Overclockers UK.’
For AE use, break up the 4 SSDs in RAID 0 and use only 2 SSDs in RAID 0. 512GB in RAID 0 should be plenty for OS and programs. Use one of the remaining 2 for AE’s cache, and the other for archive/library/backups/rendered data.
And if the motherboard can accept it, might as well go for broke, and up the DDR4 RAM from 32GB to 64GB if the sticks and slots are available.