Of those options, I'd do VASGX. I don't like the date based ones, because the allocation will change over time in a way that doesn't appeal to me -- I don't want more bonds as I get older.
Agreed - I'm inclined to switch back to VASGX as my one fund.
I'm ok with giving up the allocation flexibility and extra .06% expense ratio vs the target date funds. Also, being roughly halfway through our investment period I could (1) convert our current VTHRX holdings (60/40) to VASGX (80/20) then just buy VSCGX (60/40) from now on to eventually end up with an allocation in the 75/25 range or (2) convert our current VTHRX holdings (60/40) to VASGX (80/20) then revisit this allocation yearly and blend with VSCGX as desired.
I like that the target date funds offer a wider variety of allocation options and lower expense ratios, but agree that their allocations get way too conservative over time - dropping to 40/60 around the target date and eventually shifting to an even more conservative 30/70 when they eventually get merged into the Vanguard Target Retirement Income Fund (like target 2015 etc. have). On an unrelated note Lifestrategy Income is even more conservative in its allocation at 20/80.
So the primary frustration with the Lifestrategy funds is the need to hold two funds to hit a number of common allocations, which somewhat undermines their utility as a go to all-in-one fund *if* you prefer an allocation they don't offer. For example having to hold a blend of VASGX and VSCGX to hit 70/30 or 75/25 would be annoying.