I have been a big fan of these roundwounds for the last couple of years but they do not get much love on here. If you're after a cheaper alternative to Dunlop Super Brights, this is it. Very, very similar string at a great price.
45-105:
https://www.amazon.co.uk/S-I-T-Strings-FN45105-foundations-Medium/dp/B07BZMQKZ8/ref=mp_s_a_1_7?crid=3KD4BXJYPQQMV&dib=eyJ2IjoiMSJ9.fDv0z1b2iMlDw6_PisXqHvAaBHvpMiV0hiKE2aRfM1tVlWppSW6WyAr87YTf40Nh2udhchlqzyM5Kopm5MTayIRp_FfeuFP98-eSPZe1hl4jhhFQ1oeFCjpHrQXS_lfwPgZGPIqtmwtmpYtEIQ_1-NM4oMLL_gG1KAMZrJRbEP-5lwJQev6SJDdOh5sJiRCSxi5_GlIQsFQ6Zc1NHgIvnA.AR5z8D6XBrS09Z5DEYqqtFvPI7GCZWGUpbT72YqwEp4&dib_tag=se&keywords=sit+bass+strings&qid=1728745922&sprefix=sit+bass+strings%2Caps%2C73&sr=8-7
45-125:
https://www.amazon.co.uk/S-I-T-Strings-Bass-Guitar-FN545125L/dp/B07BZYHCL6/ref=mp_s_a_1_13?crid=3KD4BXJYPQQMV&dib=eyJ2IjoiMSJ9.fDv0z1b2iMlDw6_PisXqHvAaBHvpMiV0hiKE2aRfM1tVlWppSW6WyAr87YTf40Nh2udhchlqzyM5Kopm5MTayIRp_FfeuFP98-eSPZe1hl4jhhFQ1oeFCjpHrQXS_lfwPgZGPIqtmwtmpYtEIQ_1-NM4oMLL_gG1KAMZrJRbEP-5lwJQev6SJDdOh5sJiRCSxi5_GlIQsFQ6Zc1NHgIvnA.AR5z8D6XBrS09Z5DEYqqtFvPI7GCZWGUpbT72YqwEp4&dib_tag=se&keywords=sit+bass+strings&qid=1728745922&sprefix=sit+bass+strings%2Caps%2C73&sr=8-13
30-120:
https://www.amazon.co.uk/SIT-Strings-Bass-FN630120L/dp/B07RTCH5ZX/ref=mp_s_a_1_4?crid=3KD4BXJYPQQMV&dib=eyJ2IjoiMSJ9.fDv0z1b2iMlDw6_PisXqHvAaBHvpMiV0hiKE2aRfM1tVlWppSW6WyAr87YTf40Nh2udhchlqzyM5Kopm5MTayIRp_FfeuFP98-eSPZe1hl4jhhFQ1oeFCjpHrQXS_lfwPgZGPIqtmwtmpYtEIQ_1-NM4oMLL_gG1KAMZrJRbEP-5lwJQev6SJDdOh5sJiRCSxi5_GlIQsFQ6Zc1NHgIvnA.AR5z8D6XBrS09Z5DEYqqtFvPI7GCZWGUpbT72YqwEp4&dib_tag=se&keywords=sit+bass+strings&qid=1728745922&sprefix=sit+bass+strings%2Caps%2C73&sr=8-4