Triple front mech - which one?!

[CC Rider]

I am swapping my winter hack to a new frame and have a Shimano triple front ring 52-42-30. Unfortunately the downtube on the new frame is larger (31.8mm) so I need to replace the front mech. While I'm at it, I thought it might be worth upgrading from the budget Shimano mech I have been using.
Could I use a Campag mech? There are plenty of Veloce or Race options on ebay; any thoughts on which would work better? .... or should I go with Shimano 105 or Ultegra? .... or something else?!
The reason for considering Campag is that the hubs are Campag wide flange and the idea of gradually moving other parts to Campag appeals.

 

[bontybonty]

3x9 or 3x10
The 10 sped chain is 1.2mm narrower
3x9 I'd recommend xtr 970
Likely will also shift 10 speed
Comes with shims

 

[bontybonty]

This beautiful works like silk
Needs 9 speed chain

 

[CC Rider]

I should have said - it's a road bike and currently on 6 speed but thinking of going up to 8/9 maybe. I'm using downtube friction levers so not too pernickity .... will MTB parts work?
Also working on a limited budget ..... those XTR bits are indeed lovely but a bit out of range

 

[M_Chavez]

I might have a spare 3sp shimmy.

Best front mech is no front mech though

 

[CC Rider]

Too hard core for me! .... but seeing as you don't need it - please let me. know more. Thank you

 

[M_Chavez]

I should have a few of them, but they are so deep in the parts bin, that it might take a few days to try and fish them out.I was planning to dive into the bin at the weekend (weather permitting) but please remind me if I forget.

 

[M_Chavez]

Only managed to find 31.8mm Alivio. Let me know if you want it posted.

I thought I had Deore, but can't find it - must have given it away a while ago.

 

[CC Rider]

Sorry, but probably not; while I'm making the change I'd like to go for something a little further up the range. Thanks for looking though, really appreciate it.

 

[M_Chavez]

No problem.

Fwiw, I've run a triple for years & years and I can't say that I noticed any quality differences in the front mech as you move up or down the range...
Best way to improve a front mech, of course, is to treat yourself to a narrow-wide chainring. And ditch the mech .