I've got the twin cylinder compressor and it's very fast. Pumps my 33" tyre up in little over a minute. I use it in conjunction with the ARB Deflator: http://www.devon4x4.com/products_b/p...-deflator.html
The tanks would be nice, but considering how often you'd use it I recon you could make better use of the space.
Ideally go for this: http://www.devon4x4.com/products_b/p...nch-12000.html
As for de-deading, I would strongly suggest you buy some beadlockers or failing that get some Staun internal bead lockers: http://www.devon4x4.com/products_b/p...-inch-7/9.html
Nick