Tyres- before I click buy

My Krylions are knackered. I suppose the default replacement is the Pro 4 Endurance. Before I buy can anyoe suggest alternatives. No particluar brand loyalty. Price should be under 30 quid. 25mm only please. and yes I did search.
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TREK 2.5 training and commuting
GIANT REVEL 1 LTD for when it gets all snowy
So, for me, either GP4000s or Ultremo ZX, both will cost at the top of your budget even with shopping around. Neither will last as long as Kyrllions (which last forever) or offer the same protection but the ride quality will be much better.
Ended up with Conti 4 Seasons. Nothing wrong with them but IMHO they dont ride as well as Krylions and are visably smaller (admittedly 25mm Krylions are closer to 27mm and GP4S are pretty much bang on 25mm) and this can definatelly be felt through the bars. I am not going to replace the GP4S until it wears out/fails, but next time I will be trying the Pro4 Endurance.
A whole heap of people will be along now defending the honour of GP4S, particularly the Audax crowd who universally love them.
Sold as a race tyre, but I'd say a really good all-round tyre.
Gone off Schwalbe road tyres after poor quality control on them.
a pair for £45 here too:
http://www.merlincycles.com/bike-shop/t ... tyres.html