For 4-suit transfers, in the minors consider reversing the responses by opener. So over 1N-2S, 2N DISCOURAGES, and 3C encourages (same over 1N-2N. Reversing these responses became popular in NYC in the '70's. There are more advantages to using the reverse responses. First and foremost is right-siding the contract when partner has a fit/maximum and responder has no bid. This is the more likely scenario depending on what you call a fit/maximum. At IMPS, it may be more important to show a fit with a minimum so responder can bid 3N w/ xxx Ax xx KQxxxx. Additionally, it allow you to "transfer" to diamonds when responder has x-x-5-5 in the minors. With 3+ diamonds he would bid 3D. If he bids 3C, you can PASS knowing you have found an 8-card fit! So now you can use the direct 1N-3M more constructively (such as 6-card minor, any side 4+ card suit, GF).