looking at mcintosh pre-amp c2500. Can I do better for the cost of a Mac?

Different? Yes.

Better? It’s all relative and and very subjective. System matching or preamp to amp synergy is more important.

If the C2500 makes you happy, go for it. I have and love a C52, as well as two others. The C52 is the one that makes me happy.

I'm new to high end audio and I have a lot to learn. I fell in love with the sound tube amps or pre-amps produce. I know my pre amp is what I want to build off of. Unfortunately money is an issue so I was hoping to get the best sound for what I can afford. Reading all the blogs and specs on amps and pre amps my brain is on over load. I have only heard mcintosh, Rotel coupled with B&W speakers to reference too. 

With that hat said thank you for ur input @ joeinid. 

You are right about the preamp being the heart of a system. You might state your budget for the system, what sources you anticipate using, your music preferences, need for loudness and room size. With that info we can better advise. It should be an enjoyable journey.

Yes, please tell us more about the gear you have and are thinking about getting. Also, what speakers do you have?

Please do not stress, this is a hobby, a fun diversion, not war and peace. Music should bring joy to your life. The gear is just a means to an end. Most all the gear today is great, just pick the flavor that appeals to you.

Last year I upgraded to a McIntosh C50 pre-amp and MC452 power amp, yes, I know a lot of audiophiles don't like "the M brand", but for several months, auditioning lots of speakers, that combination (to me) really stood out as being very "musical".

I am not a fan of tubes, but I'd think the C2500 would be an excellent choice for someone into tubes.

I previously had a McIntosh MCD500 and MAC6700 and can tell you, no problem selling McIntosh equipment in good condition and you won't lose much to depreciation.  Other brands might be really difficult to sell.