#1 Both Vulnerable
North  East  South  West
    1♠      2♥        ??
 
                                                              South
                                                              ♠ A 8 5 2
                                                              ♥ Q 10 4
                                                              ♦ 10 9 8 6
                                                              ♣ A 2
 
As South, your 3♥ cuebid, showing a limit raise in spades or better, assumes a jump to 3♠ in competition is weak. Most players now play that any raise in competition is weak. The guideline is raise to the level of total number of trump. With 3 trump, raise to the 2 level. With 4 trump, raise to the 3 level. With 5 trump, raise to the 4 level. Partner assumes a limit raise for the time being. Partner can either accept the limit raise by bidding 3♠ or bid game. If partner rebids 3♠, then South should pass. Holding an opening hand or better, South would continue to bid over North’s 3♠ bid.
 
A more advanced agreement would be for South to bid 2NT with a 4-card limit raise (only) and 3♥ with a 4-card game-forcing raise.
 
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