I've used XLs, but it has been years. Nice strings, no doubt about it, and very affordable.
Lately, I've been using a Pure Blues, the very light VW set. Or, a slightly stiffer set, the DR Hellborgs. Both are very nice.
I really like the Pure Blues. I think the tension is very low, close to TI jazz flats. I can run either set ( TI's or Pure Blues) on my Dingwall Super P with very little set up fiddling around. The feel is very similar. Very light slinky strings. I've also used the next heavier Pure Blue set. I dig the VW set.
Pure Blues come in a variety of sets, so you can use a heavier set if that's more your cup o tea.
With Fret Nation up and running, I'd recommend the Pure Blues, or the Hellborgs. Both are affordable, though more expensive than XL's.
I've never really thought, "Boy, I miss XL's." They were just an inexpensive nickel round, often on sale in two or three packs.
I get more mileage out of the Pure Blues.