Hi all... I'm looking at taking a step into large format 4x5, coming from medium format experience. I've read Steve Simmons' book and many others and am looking at and comparing cameras. What advantages does an Ebony (say, their lower end RW45 models priced around $1,595) have over the Tachihara model that is priced at about $695? I also love the Ebony SV45TE, priced at $2,895. Thanks!