Bordeaux buying help

I'v bought a few cheaper '00 bordeaux (Cantemerle, Montlisse, Chateau Rouget, Grand Corbin Despange, L’arrivet Haut Brion) and have some '96 Lagrange and '99 Sociando-Mallet.
Found what look to be some decent prices on some bordeaux (mostly '00) and wanted some advice on whether you think these are buys. The key is I'm really looking for wines that are upgrades to what I have already (or incredible values). Though none of these below may be WOW wines, I'm looking for ones that will at least develop into something pretty special.

'00 Grand Puy-Lacoste $48
'00 Barde-Haut $44
'98 Leoville-Barton $40
'00 Haut Bailly $40
'00 Chateau d’Armailhac $36
'00 La Fleur de Bouard $28
'00 Monbrison $24
'00 Chateau d’Aiguilhe $20
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