Hi Grey Ghost.
As with most projects I use real massive mix of manufacturers, Studio Miniatures and Foundry with some Old Glory for Sikh Regulars, the British mainly Foundry too but with Perry, Iron Duke and others mixed in, the irregulars are even more varied. If you look back through old posts I have named the manufacturers for each unit as I complete them so you can heck that out more fully on the blog if you are interested.
James, yes the cards work really well for this period, I am going to produce some of my own with images more appropriate to India but yours have really helped me develop the rules for this period.