£1862,- plus VAT... seems to be a lot for me.
I wonder if Ohlins could bring such a great improvement to justify the Investment.
I see limitations rather in tire grip than in the suspension of the M3W.
Actually that is a very good price - I paid a lot more than that for the Ohlins setup on my Renaultsport Spider. Ohlins are (in my view) by far and away the best suspension manufacturers in the world. Their kit has transformed by Spider and I would wholeheartedly recommend them to anyone. Had I not already invested a lot in the Spax Adjustables, I would go for this Ohlins options at the drop of a hat.
The only consideration is that any suspension works best with a very torsionally stiff chassis and I'm not convinced our tricycles are that stiff in terms of resistance to twist. Maybe this might mean a lower practical to limit to what could be achieved, even by Ohlins, but I'd still chuck decent money at this kit, regardless. You simply can't get top quality suspension components for anything less than top money - it can't be done!