I have feeling the BG Flat 50s will do you, especially if Tim has recommended them as well.
I've got them in two teles, both maple board and ash body.
My main one of these two is a Baja that is very resonant and quite bright. The original pickups, which a lot of people seem to like, seemed a bit thin and weedy to me. When I tried to get her going, it would get too bright for my tastes, and a bit mushy when I tried to tame it.
Now I suspect that your tele has got it worse than I had, but I was getting quite saddened by it as well. Especially with others on various forums telling me the pups were good, all I had to do was adjust the heights...
I gave in and ordered a set of BG Flat 50s, and... WOW!
It was exactly what I'd always imagined for a tele. A nice bit of grit, but well-balanced with some body to it as well. They respond really well to volume and tone knob fiddling. They also respond really well to height adjustments - like all the BKPs I have - you can set it for bright and ice-picky if that's what you like, or thicker and punchy (that's what I like).
They turned a "what did I buy this for" guitar into one of my favourites. I was heading towards "I guess teles aren't for me after all", and after the BG Flat 50s I ended up getting two more teles...
I also have Yardbirds (rosewood board, alder body guitar). They are sweeter than the BGs, and through my set-ups they're clearer and not quite so thick. In the long run, I find this tele a more versatile instrument, but I prefer the tone out of the BG 50 teles.
If your tele is prone to making pickups sound bright/thin, then I have the feeling that the Yardbirds might not impress you so much as as the BG 50s...
I can't really comment on the other BKP options, but I do occassionally get tempted by Piledrivers myself.
I do have one last thing though - have you experimented with capacitor types? I've only recently learnt about this, I didn't really believe it when people recommended it, but it is now definitely something I consider if a guitar was sounding "not quite right". Paper-in-oil capacitors tame the top end when compared to ceramic disk types or "orange drop" types. You get slightly less output out of the guitar (even with the tone control full open), and it sounds slightly mellower, but in good way. One way of describing it is that the sound is more "vintage".
I've used PIO caps to "fix" an SG that wasn't giving me very pleasant sounds on certain amp settings, it's lovely now. I've since tried them in guitars that didn't seem to need fixing, some with very little effect, some with STUNNING results. I have a strat and les paul that were pretty damn fine already, but with the PIO caps in, I can't put them down once I start playing, stunning result...
However, at the moment I'm not sure I like the effect in my Baja with BG 50s - it's taken some of the edge of it. It sounds really good, but I'd got used to the meaty rasp it was creating :lol:
If you've not tried PIO caps, give it a go. Even with the expensive Vitamin Qs, it's a fairly cheap experiment, and on a tele you don't even have to take the strings off to try it!
EDIT: I'd even recommned trying the PIOs with your current pickups, just to see what it does to the guitar, but I still think you want BG Flat 50s as well :lol: