Thanks for your help (all).
I didn't know about realign to grid, thanks and from now on I'll keep snap on at all times-promise.
Ulillillia(that right?) I downloaded your all-mdl level and thought it was a cool idea-I spent a few days with just models for buildings and youre right-there is a definite beauty in the fast build times and of course the snap thing.
Also I found textures looked better on mdls but in the end got frustrated by being so restricted with lighting- It got to the stage where I realised Id have to have inside and outside versions of models each with different materials so that (dynamic) sunlight and ambient sources would be reflected accurately. Also
I began to go insane welding all those vertices.
After weeks of testing out new ways to incorporate nicely lit, quick buildings Ive found that for the most part, seperately built and non-dynamically lit map entities are the easiest to manipulate (despite the snapping) and seem to look pretty good. Ive built up a folder full of basic prefabs - walls, doorframes, etc so now I can just load them into my entity project and put them together like lego- I can now build a huge structure in a short time, and texture everything once its complete. Then I just light it, load it into my level and assign a material. Build-time 5 seconds or so, just like a model entity.
Dano.