To be honest I actually use Wikipedia more than TF Wiki when it comes to looking up information on Transformers. I (personally) find the Wikipedia articles more informative without the needless humour (the humour on TF Wiki seems to try to hard, the frequent contributors there try to make everything humorous and in my opinion it gives the site a "crude" and "amateur" feel).

Having said that my knowledge of Transformers lore is hardly comprehensive so TF Wiki may have more reliable information...