I have been through a number of ARC amps over the years, such as the VS 110, VS-115 and now, the Ref 150. I never owned the VT 100 Mk III, but for some reason I recall reading that some said the VS-115 sounded better. In fact, some folks, some of whom may have been ARC dealers, wrote that the VS-115 was about 85% to 90% as good as the Ref 110.
So, I suggest that you consider the VS-115, an amp that I owned for many years and thoroughly enjoyed. Having said that, I also suggest that you call Kal, ARC's customer service rep. Kal knows the ARC line very well and he could give you a fair assessment.
Another consideration may (??) be that the VT 100 Mk III was introduced in the Fall of 2001 and discontinued in 2006. I am not suggesting that a preowned VT 100 Mk III is at the end of its useful life, but a unit you pick up may need a freshening up (e.g., new caps and so forth). That is certainly something Kal can speak to.
Good luck and let us know what you decide.
Btw, amp/speaker matching is important. What speakers are you using?
So, I suggest that you consider the VS-115, an amp that I owned for many years and thoroughly enjoyed. Having said that, I also suggest that you call Kal, ARC's customer service rep. Kal knows the ARC line very well and he could give you a fair assessment.
Another consideration may (??) be that the VT 100 Mk III was introduced in the Fall of 2001 and discontinued in 2006. I am not suggesting that a preowned VT 100 Mk III is at the end of its useful life, but a unit you pick up may need a freshening up (e.g., new caps and so forth). That is certainly something Kal can speak to.
Good luck and let us know what you decide.
Btw, amp/speaker matching is important. What speakers are you using?