I'm looking for a replacement pair of IEM's to hold me over while I get my SE425's fixed. I'm in need of something that is under $60, and would prefer something under $30 if possible. I would really prefer that they work with my current olive tips as they fit my ears well, and I need good sound isolation as I use them to block out noise at work. I prefer a warmer sound (actually preferred my old SE310's to this model), but I do want something that provides more detail than the most basic earbuds. I don't like boomy base, but rather a rich sound. I prefer tubes to solid state electronics if that provides any insight. I appreciate any advise that you might have.