Most Recommended On-Line Auctioneers

[Bud]

If one wanted to find a reputable auction service (other than eBay) that would handle a small collection (parts, literature, collectibles, and maybe one vehicle) in an on-line format, who would you recommend? I am interested in feedback from those who have experience. What are the costs? Is it best to associate it with a big auction house (for example at Auburn, IN)? Any other recommendations? Thanks in advance.