I have a 5'x10' with an indexer bay (it's a monster) but i bet 75% of the stuff i do is confined to a 2'x2' area in the 0,0 corner of the table. I have never had anyone ask me to do some project that i couldn't accomodate because of table size limitations. That was why i opted for the biggest model at the time.
If you have access to the larger unit then you can do larger stuff there and use the desktop for smaller stuff. Additionally several guys have figured ways of indexing their work to make larger things on their smaller units.
A thought just occurred to me...the handibot is setup so it can index and make any size piece you want with jigging. I don't know enough about it but couldn't you somehow use that?
Words of Wisdom:
“Words that sink into your ears are whispered…… not yelled”
“The biggest trouble maker you’ll probably ever have to deal with, watches you from the mirror every morn’n”
“The only difference between a rut and a grave is the depth”
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Just remember...when it's time for the hearse to pull up..there's no luggage rack on top!
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The beauty of the Second Amendment is that it will not be needed until they try to take it...Thomas Jefferson