XL is the only disc that's held it's place in my bag since I got hooked on DG. My first was a Pro D, then a heap of Elite X with some Z seasoning. The Z's are more stable overall and quite a bit more LSS - like LSS 0 for X and LSS +1,5 for Z - and I use the X's the most by far.
Nowadays, i use it along PD's and Pred's in these slots:
- If I need a straight drive and placement is more important than max d, and there's little to no head-/cross-wind.
- If I'm in the fairway and I can't use/don't need max oomph.
- If I need a high/long turnover that won't come back (this slot is a toss-up wit a beat P-PD though).
Still love it enough to never really commit to testing out alternatives. I guess JLS or River would be nice to try, but I haven't really seen any convincing arguments for doing so.
I've used Valks, Wildcats, TD's for the understable max distance-slot where I find the XL a bit too slow, but beat P-PD's cover this now.
I'm still having fun testing faster stuff that might take over this slot as well, so far I'm not consistent enough with faster stuff though, probably for the same reason that the XL has been a safe choice for a lot of shots so far: I find it's not that touchy when it comes to nose angles. You have to work an X-XL to get much fade.