I use the wellkid one and the syringe that came with some calpol, put the syringe in her mouth pointed into her cheek towards the back so she doesn't spit it all back out - I wouldn't say she enjoys it but she'll just about let me squirt it in like this!
Both DDs (6yo and 21m) like the orange Boots multivitamin liquid - not sure if it is the same as the one you've tried and the Haliborange liquid one. I prefer the Haliborange one as it has more vits and minerals in it iirc. Younger DD has happily taken it off a spoon since we started giving it to them at around 12m.
How old is your DD? I started mine at 6mo with Abidec. It's vile vile, but it's the smallest amount out of all the multivitamins you give to kids. She started at 0.3ml and moved to 0.6ml now. All given by syringe. I squirt it into her cheeks. She used to run away from it, but now she's used to it.
Thanks for the recommendations. I think I'll try Abidec next as the ones I've tried so far have been 2 x 5ml syringe. It's too much to squirt in her cheek as it dribbles out and there's no chance of going back with a second syringe full!
My DS has the Healthy Start vitamins from the children's centre - £1.80 - not sure if these have all the vitamins you want in them, you'd have to compare. But you only need five drops on a spoon once a day. It's a tiny amount and they are banana flavoured (I think with the same flavouring they use in amoxicillin). Never have a problem giving them to DS - it's the only time he's spoonfed, so it's a novelty for him.