recommends for interconnects?

+1 @jafox - likely no. The low budget would be a challenge just moving up from a stock cable. 

Do you know whether your MITs have had time to fully burn-in yet? 

I have a similar requirement to connect a SoulNote Equalizer’s balanced output.  Their own interconnect cables are unshielded, solid copper in foamed FTPE dielectric. In other words, vastly different from multiply shielded, stranded exotic alloys found in almost every other cable.

The reason is interesting.  SoulNote says music is a waveform delivered in time, not a Fourier transform delivered in the frequency domain. Almost all cable measurements focus on the frequency domain.

Why no shielding?  Well, the cables are balanced so EMI should equally affect the + and -, cancelling out.  Shielding increases capacitance, which smears the signal in the time domain.

MIT are good cables. For couple of hundred dollars spent on a replacement you will most likely downgrade. Is there anything wrong with these MIT XLRs?

Like others are saying, for a few hundred… No but there are some exceptions in the many hundreds to 2K range which are well worth looking at. I have chased specs and materials with interconnects running 2.5k-3k and speaker cable up to about 4k but I have changed direction recently. Auditorium A23 got me looking around and I found Luna cables from Canada. Using a Neo-vintage tinned copper and all natural dielectrics, I have found that it really puts you back in touch with the organic nature of music. Mauve balanced interconnects use actual NOS western electric wire and are quite amazing. Retail is around 1500 but if you look around rarely you can find a pair in the $800-$900 range on the used market. Well worth looking attheir offerings starting with Orange and going up as high as Rouge.