the solo 694 and the dolmar 9010 were the same saw.
Supposedly there was close collaboration in the early portion of development for the 6400, 7300 and 7900 saw series (dolmar) and the 681/675/665 solo saws. The claim made by dolmar early on was that they split in development before things got too detailed. The saws turned out miraculously similar though.
Be advised that solo is supposedly pulling out of the US saw market.
Also, in comparing a solo 681 and dolmar 7900, the 7900 has the HD filter kit where as the 681 does not. My guess is that you have a closer dolmar dealer than a closer solo dealer, though neither is particularly strong in this category