What are we talking about here? Because to get the "ultimate gears" depends on what you want to use them for, and there are a lot of different things you can do with either class. On an extremely limited budget, I think LK is a lot better for PvM and possibly also for PvP/WoE (although PvP/WoE without expensive gears is really a joke). If you want godly gears, yes it will be expensive, but that's true for either class and it still depends on what build you're using (obviously if you want to be able to use any build you'll need more gears, which will cost more - the sky is the limit for gears, for example you might want an overupped nib or several nibs with different cardings).
My opinion is that for lower end (no MvP cards or only one or two) LK is going to be better, but for upper end it depends on your skills and preferences, either class could be equally fun and useful as long as you have the gears for it. It's really entirely up to you, and you should probably try them (or at least non-trans equivalents) to see what playing style you like. Kind of hard to make a decision about a class you haven't even tried (and if you haven't PvMed with it at least into the 70s, you haven't really experienced the class yet).