Advice on buying Jeans for holiday

I`m going on hols to Bulgaria in September and I`ve checked out the Kays 
website for T-****rts and Jeans for the trip, I`ve not got a lot to spend 
about £ 260 to buy clothes for 16 days. I`m looking at wearing a T-****rt
for 
2 days and Jeans for 4, therefore 8 * T-****rts and 4 * pairs of Jeans.

The T-****rts I`m looking at are about £ 39 - £ 45 for a pack of 2 Branded 
T-****rts, and I`m looking at the relatively cheap Lee Cooper Stonewashed 
Jeans, I`ll buy 4 pairs of stonewashed as I like the colour more then the 
others available.

I already have a pair of Lee Cooper beige coloured jeans I got on eBay W34

L30 and they fit me well, the pair of Levi's I`m wearing at the moment are

W32 L30 but the Lee Coopers are a tighter but ultimately better fit!

My question is are the Lee Cooper jeans I`m prososing to buy going to be
the 
same, size wise as the ones I already have, in other words should I go for

W34 L30 I don't want them to be too loose like other pairs of W34 I have
but 
I`m thinking that as the pair I already have fit me well I should go for 
that size in that brand.

Any advice/comments?