What unit size do you prefer and why?

[caravel]

I'm still on my first campaign and chose to go with the default unit size, but I like the idea of bigger battles, or battles on a larger scale, so I intend to try the 'huge' unit size in my next campaign.

I have always played on huge unit size, apart from a spell of a few months playing on large units. I know it causes a performance hit but I simply prefer it with the 200 man spear units, 120 man infantry/missile units and 80 man cavalry units.

I know this has other consequences though, such as longer training times and higher support costs, and the fact that some units aren't scaleable, like Royal Knights.

The 2 year training time doesn't bother me in the least, but I may be used to it perhaps. The higher support costs aren't really a factor as you are paying per man anyway. The higher training costs and training times increase difficulty somewhat, as you have to think before you train an expensive unit and also you cannot have a unit trained and ready the following year in emergencies. The Royal Knights issue is a problem though.

I have solved this in the mod I'm working on by making all of the non-scalable 20 man bodyguard units (Royal Knights, Ghulam Bodyguards, Sipahis of the Porte) scalable. This equates to them being 40 man units on huge unit size. I've also changed Mongol Heavy Cavalry, Boyars and Kataphraktoi to 20 man scalable units to help balance all bodyguard units.