Hi
I've had a set of Irish tours fitted in my Strat since christmas and they are amazing, they do exactly what they claim to do, although intended to approximate Rory Gallaghers' sound they are perfect for SRV and Hendrix type tones, in my humble opinion anyway.
They certainly nail the Gallagher tone, more so with a decent strat, but you can back them off and get glassy shimering cleans, the classic Littlewing tone etc. They are very expressive.
I've never played a guitar with texas specials fitted or heard them but from all the research i did most people reckoned the texas specials, although hotter than the standard fender pickups were a bit pants tonewise. Check out harmony-central.com for independant reviews of all sorts of pickups.
When choosing my pickups I also shortlisted Lindy fralin and Kinman woodstock pickups, but after reading a raving review of bareknuckle pickups in Guitar magazine which awarded them a golden star buy award thingy I decided to buy British, sorry buy Cornish !!
I thoroughly recommend them !
Big up Kernuaw !!!!